For DS1s last b-day he gave out Star Wars buildables, which is like a pack of trading cards with plastic punch-out cards to build various Star Wars ships. They can build 5 or so mini-ships with each pack. Target usually has them.
My kids love these and regular trading cards, but they may be considered junky to most people. I have given them away as favors and I get them from ebay cheaper than in the stores. There are also Star Wars easy readers and Mad Libs, which are $3 or $4 each. I have found that what the kids like is very different from what I would choose so I tend to let them pick. (For DS2s recent Mario/Sonic birthday we gave out Mario trading cards, Sonic stickers, and homemade chocolate lollipops).
Donna
Mom to JT 1/03 and TJ 8/04