he lives for food but is in a dorm with only a micro and has UNLIMITED DINING PLAN (that so far...he LOVES the food)
Even if he does like the food, you can't go wrong sending him snacks. My college cafeteria had good food too, but dinner ended at something like 6:30, so it was always nice to have snacks for later in the evening. Also, I remember that after a while the food became repetative and something different was unexpected.
Rice Krispie treats travel better than cookies and have a long lifespan. My family prefers them made with crunchy peanut butter. When holidays arrive (not so many in the fall semester), you could throw in some seasonal sprinkles.
Another food treat that requires little effort on your part: Call him to make sure he's in his room, then order him a pizza (pre-paid with your credit card, don't forget to tip the driver) so all he has to do is walk downstairs to pick it up.
Also, keep it small. Numerous small packages trump on big package.

all GREAT ideas....thanks! I'll try the cookie thing in the coffee can and if that doesn't work 'll try bar cookies like Dismom24 suggested
I personally never have coffee cans, but it strikes me that you could do the same thing with a Pringles can. Just bake the cookies the right size to fit in the can, and they'd travel well. I think I'd have to bake a BUNCH of cookies and choose just the right ones to mail . . . but we here at home would be willing to make the sacrafice and eat the improperly sized cookies.
How about movie passes to one of the theater chains in his area?
Or even a monthly subscription to Netflix? He can keep order the movies online, have them delivered to him and keep them as long as he wants with no late fees...
Not helpful, but I was super-surprised to learn that my daughter's dorm has a Redbox in the lobby!
Plus cold medicines were so expensive!
PS he wont need a sled, we just used cafeteria trays for sledding.
OTC cold meds were free at our health center. No appointment, just walk in. Ten minutes later you'd have a bagful of medicines of your choice. About $200 of your tuition goes to run the health center. Use what you've already bought!
They'd quit giving out cafeteria trays whenever bad weather approached at our school. We were always so irritated at having to balance multiple plates and cups, but I do understand their reasoning!
GREAT Ideas Naples! I especially like the scissors idea!!
Shouldn't a college student go away with a basic set of desk supply items? Scissors, stapler, etc.?