I recently got a bunch of O-rings from the Sampler Pack from WASD and I put them on the whole right side of my TKL Brown board. I can't tell you how unique it feels to have to half the keyboard feel different than the other half. Every time I hit the DEL, HOME, END, PG DOWN, PG UP, and arrow keys, I feel like I'm in a different dimension. Initially I was gonna throw these O-rings out, or store it away forever in a box a la Raiders of the Lost Ark, but I was able to put them to good use, and now I feel like a champ.