Some cool bugs for bug-catching: bumble bees, orchid bees, carpenter bees, parasitoid wasps (like fairy wasps--smol guys, Aphidius, or Megarhyssa), silkworms, ornate lace bugs, larval dragonflies, giraffe weevils

We don't have a huge number of pest insects around. I think a lot of pet TC's could use silverfish, a cluster of fleas (not in a jar), bedbugs, different species of cockroach (German, American, Oriental, wood cockroaches...), lice, mosquitoes, sandflies/blackflies, a group of termites, ticks, carpet beetles, red-legged ham beetles (they're cute as well as being terrible!), wood-boring beetles, clothes moths, pantry moths, grain weevils, heck, even horrifying creatures like bot flies, tseste flies or driver ants. Insects in groups would also be great (trail of ants, group of cockroaches, weevils in flour, etc)

I don't think we have a good house mouse/pest mouse (do ping me if there is one!). Mouse/rat/cockroach droppings could also potentially be good.