I did this for my MIL when she turned 60 and 2 friends when they turned 40. A few of the things I got where mentioned. I also got the number of batteries, stamps, Q-tips, dental flossers, safety pins, paper clips, pins, needles, pencils, pens, pennies from each year (for MIL), quarters, nickels, dimes, lottery tickets, etc. and I also did lists, 60 or 40 Jokes, 60 or 40 memories, 60 or 40 Oscar winners (one for each year), 60 or 40 events that happened on your birthdays, and for my MIL I also put together 60 smiles which were collages I made from family photos of 60 smiles. A lot of the little things I got from the dollar store.
Donna