a few ideas:
A fisherman's hat made with cool manly fish fabric
a journal for his poems
checkout line themed marble magnets
improv in a box: decorate a box with whatever you want, include in the box one bag of slips of paper with verbs and one bag of slips of paper with adverbs. To play, choose one from each bag and "Dance" "Crazily" or whatever the two say. The other person or people have to guess what the slips say. You could also make a couple really tiny dolls and a teeny park bench and play mini park bench (another improv game) acting out the scene with the dolls.
that's all I can think of for now