Hiding games

I posted before about the best toys being the good old and simple: strings and stuff. But the very best thing you can do with a toy is to make it... hide! No amount of wriggling and dangling causes such an immediate reaction of pricked ears and shotgun pounce as dragging the string under a cushion, a rug, or my foot. Wow. If mice only knew that trying to hide is the worst thing to do...