Excellent collection of free icons

I've looked high and low for a collection of low-cost or free icons I could use with Poker Copilot. Typically you have to buy a set of 300 fonts or so, even if you only need one. The search left me empty-handed and frustrated. I had given up and was ready to commission some icons.

However a few days ago I stumbled upon Silk Icons, a set of 1000 icons, all suitable for use with Mac software. Elegant. Professional. Price: $0.00.