I have typical common snails found at any LFS
along with a couple hermits. Personally not a huge fan of hermits as they can knock stuff over and climb on coral. I also have a couple near snails, one is a strawberry turban snail, the other is an abalone. You can also get conch which are neat. I also have nassarius snails for my sand bed and they are cool, like little submarines popping up as soon as good hits the water.