Ukuleles are fun :-). I've tried playing a lot of different stringed instruments over the years, but never got as far as fast as with the uke. Armed with a ukulele, a chord chart, and a computer to google song tabs, you can be strumming songs you know within an hour. Try it - google "[song name] chords" (without the quotes). You will almost certainly find a listing of that song's lyrics along with it's chords. It may be on a guitar site, but that doesn't matter - just play the same letter chords from your ukulele chord chart, and there you have it!
I also like woodworking, and shortly after getting my first uke I decided to try may hand at making one. It's not that difficult if you're a reasonably competent woodworker with a reasonably well appointed shop. Click here for full-size plans of a ukulele just like the ones I'm making, plus construction tips.
If you aren't a woodworker, click here to look at ukes I've made that are for sale.
Links:
The Central Ohio Uke Peeps on MySpace (I'm the "Dave" character mentioned :-))
Mickey Maguire's Blue Waters MySpace page (He's playing one of my ukes on a couple songs on the CD!).
Ukulelia - "The World's Greatest Ukulele Weblog!"