The possibilities are freaking endless. I'm sure you want to paint your ukulele and make it really awsome, but... what if you aren't the greatest when it comes to realistic drawing? You might want to look to African pottery for ideas. African pots feature images are patterns that striking and simple and lend themselves to the curved shapes of a ukulele. The color and patina of earthen clay may also provide interesting ideas for ways to stain and finish the african sapele that our concert and tenor ukuleles are made from. I've included a few ideas here, but you can search the web, visit your local museum or check out some books at the good old library for other ideas.