I'm not sure if anyone has been looking on eBay for Gascan's, but aside from all of the fake ones, there are a lot of icon options out there. Is there actually a way of taking out the icon's from the Gascan without destroying them?
to swap icons i take my fingernails . . . some people prefer a thin piece of plastic or even a scewdriver. but the fingernails work fine for me so far ;o) you can do it with almost all icons. just bending the stem a bit outwards and try to get under the icon. there is a double-sided tape. the icon can be removed and put back a few times but than you need a new tape!