E.P.
I agree that something they can use for their get-away is nice. Also, burning a nice c-d for him with all his favorite songs. Putting together a video with old snapshots is nice too and you can run it on a laptop through the party. We did this for my sister's 50th and it was so cool to see everyone gathered around the laptop from time to time. We tried to find old pictures of most of the people at the party, grandparents, etc...
My one sister did something so fun. She had really nice bottles of wine private labeled with a picture of my sister on them and some clever saying ... "Like fine wine, you just get better with age!". We also had three centerpieces, located in different parts of the party area brimming with all kinds of vintage candy. It became such a conversation starter! You can go on-line to get ideas or perhaps you can go, locally, and someone can order you some bulk candy (i.e. Ferrara Pan was big - boston baked beans, lemonheads, jawbreakers, etc...)
http://candy-crate.stores.yahoo.net/assortments.html
Enjoy your party!