Thanks, that first beetle is a Pleasing Fungus Beetle - Gibbifer californicus. I saw two of them while I was up there. I've kept millipedes/tarantulas/true spiders/scorpions. I'm TERRIFIED of roaches, but I think there are a few kinds that people keep as pets. If I had to keep any it would either be hissing roaches or deaths head roaches. Beetles live most of their life in the grub stage and I think it can be hard to find any to buy, I don't think they live long after maturing into actual beetles either (but I could be wrong, I only looked into them for a short period of time).
I think that giant Tanzanian Tailless Whip Scorpions are neat and unusual, they are fast and skittish though so not the best for handling.
He died a couple months ago but he was always the one that everyone thought was the strangest out of everything I kept.