My boyfriend's 18th birthday is on Thursday. I want to do something cheap, and creative! Help!?

I've already gotten him his actual presents, but I'd like to do something a little more meaningful that shows I put time into his birthday. Seeing as it's his 18th birthday, I'd like to get him 18 of a few different small things (ex. hershey's kisses, etc.) but I need help with ideas! Feedback please?