I just saw this in a local flyer..might get a set or 2. They have a variation of the Dot it led lights...looks like they have a magent for your fridge. The yellow one might work good for a simple pair of Jawa eyes for a costume or 1:1 display.
The only possible problem would be you would have to leave room so you could click on the light. If they work like Dot It lights, you have to push the lense down to turn it on. Either that or you'd have to wire a switch into them somehow.