To Giveaway?

I noticed that I am teetering dangerously close to 100 followers (How did that happen? Thank you all!) and was wondering if I should do a giveaway.  I'm not entirely sold on the whole giveaway thing- I'd like people to follow me because they want to and not just to get something for free, but 100 followers seems like a big deal so I just thought it might be fun to do something to commemorate it.

Does it sound like a good idea?  And what to give away?

Book clips?

Gift tags?

Magnets?

Things to do list?

Or maybe an item of the winner's choice, or a gift certificate?  What would you pick?