I love the idea of a photo booth "SNAP STATION" which is a great way for everyone to have fun and also get some fab photos of guests. They can be expensive to hire (£300 usually) but then I can across the idea of a DIY one where some clever person has figured out how to use your own laptop/webcam and printer. Fab! They decorated their "booth" with an IKEA frame, couple of charis and a shower curtain. I've got lots of fabric I could use instead. I've seen booths which have dressing up props which I'm sure I can pick up from charity shops...
This is the website where I found the link originally - http://davidcline.wordpress.com/2009/08/16/diy-wedding-photo-booth/#more-125