i too am currently housing an arachnid in a 1gallon ice cream container.i have a devil scorpion in there(h.spinigerus).
for decor in your blonds home,you can get a lil coconut hide from petsmart or a rock cave,some cork bark,some nice packed down coco fiber to burrow in,a fake plant and a cricket for a roommate.look around at enclosures and let your creativity fly.its fun.