I agree with whoever suggested the cardboard box that wine bottles come in, the one that has divided sections. Maybe you could get 2 of them and have 1 for crochet hooks and another for knitting needles.
And how to get circular needles unkinked is easy -- get a container of VERY hot water and place the needles down into it. Let them sit for a few minutes and then dry them off by holding one end in one hand that's holding a paper towel. Puuuulllll it thru the towel with the other hand, back and forth. The pulling motion will (hopefully) help it to straighten out the kinks.