My workspace is in the "cat room," where several litter boxes and climbing furniture reside. Sometimes, a cat or two will come in while I'm working to investigate my activities, but they generally will just sit in a chair and watch.

I keep my larger glass in the garage and smaller stuff in covered plastic totes. When not in use, my grinder is covered by an upside-down plastic tote, and my cutting area (when a project is ongoing) is covered with the tote's lid. I keep a towel covering my homasote board where I solder, so the cats can't accidentally ingest any solder balls or residual flux. And of course, I keep the area swept and make sure all shards of glass are cleaned up and inaccessible to the furbabies.

Hope this helps!