I have always been leery of displaying my coins. not worried about them growing legs, just seems that because they are so small it's hard to appreciate them in a static display.
I'd like to have a Pixstar Digital Picture Frame. This device let's you upload pics to a website which are then displayed on a self contained LCD display as a slideshow. You can pause, rewind, ff, etc.
You can allow other people to upload pics if you want. Pretty cool.