Guitar picks are great for recesses. I have a pair of thin fender picks (So thin you have to bend it to do anything) that I use for recesses. @Studio42: you can wipe the silicone off it easy enough.
http://www.google.com/imgres?q=guitar+pick&um=1&hl=en&client=firefox-a&sa=N&rls=org.mozilla:en-US:official&biw=1280&bih=685&tbm=isch&tbnid=Mj9kPSBr41uUMM:&imgrefurl=http://theblackkeysfanlounge.com/2009/02/dan-auerbach-guitar-pick/&docid=O6tLiRscIXFLTM&w=347&h=394&ei=sglxTo6dFsny0gGJxb2jCg&zoom=1&iact=rc&dur=414&page=3&tbnh=140&tbnw=128&start=32&ndsp=18&ved=1t:429,r:6,s:32&tx=50&ty=27
Use the top corners for recesses. Use the bottom corner for getting out old silicone.
http://img367.imageshack.us/img367/9020/s6301125wr4.jpg
You can’t really use these. This is why I wouldn’t ask for a worn one. They probobly have a thin or something they don’t use.