When I pulled up that list of standard measures, it reminded me that I've kept lists of substitutions - for when I'm out of something but don't find out until I'm in the middle of the recipe.

Mixed in here are some ounce to teaspoon conversions as well. I thought this might be helpful to someone.
Staples Equivalents
Baking Powder 1 cup = 5½ oz
Baking Soda 1 oz = 2 Tbl
Bitter chocolate 1 oz = 1 square
Bouillon 1 cube = 1 tsp powdered
Butter 1 oz = 2 Tbl
½ lb = 1 cup
1 lb = 2 cups
Cream of tartar ½ oz = 3¾ tsp
Cocoa 1 lb = 4 cups
Coffee 1 lb = 5 cups
Corn Meal 1 lb = 3 cups
Cornstarch 1 lb = 3 cups
Cracker Crumbs
23 soda = 1 cup
15 graham = 1 cup
Eggs
1 egg = 4 Tbl
4 to 5 whole large = 1 cup (5 - 6 medium)
7 to 9 whites = 1 cup
12 to 14 yolks = 1 cup
9 to 10 in shell = 1 lb
1 medium egg = 2 ounces
Dry Beans 1 lb = 2½ cups
Flour
1 lb all purpose = 4 cups
1 lb cake = 4½ cups
1 lb graham = 3½ cups
1 lb whole wheat = 3¾ cups
1 oz = 4 Tbl or ¼ cup
Gelatin
3 ¼ oz pkg = ½ cup (Jello)
¼ oz pkg = 1 Tbl (Knox)
Lemons, juice
1 medium = 2 - 3 Tbl
5 to 8 medium = 1 cup
Lemons, rind 1 medium = 1 Tbl, grated
Marshmallows, miniature
1 c = 10 large
Oatmeal 1 lb = 2 2/3 cups
Oranges, juice
1 small = 2 to 3 Tbl
1 medium = 1/3 to ½ cup
3 to 4 medium = 1 cup
Oranges, rind 1 medium = 2 Tbl, grated
Pimento, chopped
2 Tbl = 3 Tbl red bell pepper
Shortening/Butter 1 lb = 2 cups
Shrimp, cooked
1 c = ¾ lb raw in shell
1 c = 7 oz package frozen
1 c = 5 oz canned
Sugar
1 lb granulated = 2 cups
1 lb brown = 2¼ cups
1 lb powdered = 3½ cups
1 lb cube = 96 - 160 cubes
1 oz = 2 Tbl
Tapioca, granular
1 Tbl = 2 Tbl pearl tapioca
Yeast 1 package = 1 Tbl
Staples Substitutions
All-purpose Flour
1 c sifted = 1 ½ c bread crumbs
1 c sifted = 1 c rolled oats
1 c = 1/3 c cormeal plus 2/3 c flour
1 c = ¾ c whole wheat plus ¼ c all-purpose
1 c = 1 c rye or rice flour
Arrowroot Starch
1 tsp = 1 Tbl flour
1 tsp = ½ Tbl cornstarch
Baking Powder 1 tsp = ¼ tsp baking soda plus ¾ tsp cream of tartar
1 tsp = ¼ tsp baking soda plus ½ c sour milk (decrease liquid by ½ c)
Bread Crumbs
1/3 c dry = 1 slice bread
¼ c soft = 1 slice bread
¼ c dry = 1 c cracker crumbs
¼ c dry = ¼ c cornmeal
Brown Sugar
1 c firmly packed = 1 c granulated sugar
Butter
1 c = 7/8 c shortening, oil or lard
Buttermilk
1 c = 1 Tbl lemon juice or vinegar plus milk to make 1 cup (let stand 5 min)
1 c = 1 c milk plus 1 ¾ tsp cream of tartar
1 c = 1 c yogurt or sour cream
Chocolate
1 square = 3 ½ Tbl cocoa
1 oz = 3 Tbl cocoa plus 1 Tbl butter, shortening or oil
3 Tbl carob plus 1 Tbl butter, shortening or oil
Condensed Milk
1 can = 1/3 c plus 2 Tbl evaporated milk plus 1 c sugar plus 2 Tbl margarine
Cornstarch for thickening
1 Tbl = 2 Tbl flour
1 Tbl = 2 Tbl quick tapioca
Corn Syrup
1 c = 1 c sugar plus ¼ c liquid
Cracker Crumbs
¾ c = 1 c bread crumbs
Cream, half & half
1 c = ¾ c milk plus 3 Tbl butter
Cream, heavy (not for whipping)
1 c = ¾ c milk plus 1/3 c butter
Cream, light
1 c = ¾ c milk plus ¼ c butter
Flour
1 Tbl = ½ Tbl cornstarch
1 Tbl = 2 tsp tapioca
Gelatin, flavored
3 oz pkg prepared = 1 Tbl plain gelatin plus 2 c fruit juice
Honey
1 c = 1 ¼ c sugar plus ¾ c liquid
Horseradish, fresh
1 Tbl = 2 Tbl prepared
Lemon Juice
1 tsp = ½ tsp vinegar
Lemon, Whole
1 = 3 Tbl juice plus 2 tsp rind
Lemon Rind
1 tsp = ½ tsp extract
Marshmallow Crème
1 jar = 16 oz marshmallows, melted plus 3 ½ Tbl corn syrup
Milk
1 c = ½ c evaporated milk plus ½ c water
1 c = 1 c fruit juice (for baking)
1 c = 1 c potato water (for baking)
Mushrooms, fresh
1 lb = 10 oz canned, drained
Mustard, dry
1 tsp = 1 Tbl prepared mustard
Onion
1 small = 1 Tbl dehydrated, minced onion
4 Tbl = 1 Tbl powder
Orange
1 medium = ½ c juice
Oranges, juice
1 small = 2 to 3 Tbl
1 medium = 1/3 to ½ cup
3 medium = 1 cup
Self-rising Flour
1 c = 1 c all purpose plus 1½ tsp baking powder & ½ tsp salt
Skim Milk
1 c = 3 Tbl skim milk powder plus 1 c water
Sour Cream
1 c = 1 c plain yogurt
1 c = ¾ c sour milk plus 1/3 c margarine
1 c = 1 c cottage cheese plus 1/3 c buttermilk plus 1 Tbl lemon juice, blended
Sour Milk
1 c = 1 Tbl lemon juice or vinegar plus milk to make 1 cup (let stand 5 min)
1 c = 1 c sour cream
Stock/Broth
1 c = 1 bouillon cube plus 1 c hot water
Sugar, granulated
1 c = 1 c corn syrup minus ¼ c liquid
1 c = 1 1/3 c molasses minus 1/3 c liquid
1 c = 1 ¾ c powdered sugar
1 c = 1 c honey minus ¼ c liquid
Tapioca
1 Tbl = 1½ Tbl flour
1 1/3 Tbl = 1 Tbl cornstarch
2 tsp = 1 Tbl flour
Tomato, Fresh chopped
2 c = 16 oz can, drained
Tomato Juice
1 c = ½ c tomato sauce plus ½ c water
Tomato Ketchup
1 c = 1 c tomato sauce plus ½ c sugar plus 2 Tbl vinegar
Tomato Puree
1 c = 6 oz tomato paste plus water to equal 1 cup
Tomato Sauce
1 c = ½ c tomato paste plus ½ c water
Tomato Soup
2 c = 1 c tomato sauce plus ¼ c water
Worcestershire Sauce
1 tsp = 1 tsp steak sauce
Yogurt
1 c = 1 c buttermilk
1 c = 1 c cottage cheese plus 1 tsp lemon juice plus 1 c sour cream
Spice Equivalents & Substitutions
Allspice
½ oz ground = 4¼ tsp
½ oz whole = 6 tsp
Apple Pie Spice
1 tsp = ½ tsp cinnamon plus ¼ tsp nutmeg plus 1/8 tsp cardmon
Bay Leaf
1 whole = ¼ tsp crushed
Beau Monde Seasoning
1 tsp = 1 tsp seasoned salt
Bouillon
1 cube = 1 tsp powdered
Caraway seed ½ oz = 5 tsp
Cinnamon ½ oz = 5½ tsp
Cloves
½ oz whole = 5 tsp
½ oz ground = 5 tsp
Coriander seed ½ oz = 6½ tsp
Dill
3 heads = 3 Tbl fresh
3 heads = 1 Tbl dried
Fresh Herbs (e.g. parsley, rosemary, basil, etc.)
1 Tbl = 1 tsp dried herb
Garlic
1/8 tsp granulated = 1 clove
½ tsp minced = 1 clove
1 tsp chopped = 1 clove
Ginger, ground
½ oz = 6 tsp
¼ tsp = 1 tsp raw ginger
Lemons, rind 1 medium = 1 Tbl, grated
Mace, ground ½ oz = 5½ tsp
Mustard seed ½ oz = 3 tsp
Mustard, dry
1 tsp = 1 Tbl prepared mustard
Nutmeg, ground ½ oz = 6 tsp
Oranges, rind 1 medium = 2 Tbl, grated
Peppercorns, black 3½ = ½ oz
Pumpkin Pie Spice
1 tsp = ½ tsp cinnamon plus ¼ tsp ginger plus 1/8 tsp allspice plus 1/8 tsp nutmeg
Saffron
1 tsp = 1 tsp turmeric
Salt 1 oz = 1 Tbl
Sesame Seeds
¼ oz = 2½ tsp
1 oz = ¼ cup MINUS 1 Tbl
Vanilla Bean
1 inch piece = 1 tsp flavoring