Queen Catcher, Spring Clip-Style $3.00 (compare to $4.95)
"PICK UP ONLY" at BASF beekeeping meeting
Made of clear plastic with metal spring-action (squeeze clip to open, release to close) with holes sized to allow worker bees to come-and-go, but safely retains (traps) the queen. Very handy for picking up the queen off the frame and hold her temporarily, so you know where she is while you do whatever needs to be done in the hive.