pet rocks. but good beginner Ts. keep them dry, have a hide and a thick substrate layer. they sometimes do some excavating, but from what ive seen, usually don't. keep a water dish in with them, dont bother putting a sponge in it. they do fine at room temp, and dont need to feed too often. verts arent needed in a spiders diet.
they usually take being handled well, but some of them can be jumpy/defensive. careful if you decide to hold it, they handle falling about as well as an egg.
they do go off feeds from time to time, i had one stop eating for 7 months in preparation for a molt. so if it doesnt eat for a little bit don't worry too much as long as its not losing weight, roseas come from one of the harshest environments on the planet, they are pretty bullet proof as far as Ts go.