Slightly random Q, but I have been after a foundation/powder brush that I can put in bag/take away when travelling. Everything I have - or have seen - is without a top, so I keep shoving them in plastic bags. Not ideal. Feel pretty sure I have seen clever ones that swivel down and then have a click on top, but damned if I can find them. Anywhere. Throwing it open to the collective wisdom of MN! TIA.