We got Lindsay an absolute pearler a while back. We live on a property for those that may not know, and we have a gate at the end of our drive that is shut if we have sheep out etc. So this day the gate was shut and we had to go out for the day and Lindsay volunteered to open the gate when we got to it, so we stop, he gets out and opens the gate and then just as he closes it, DH starts to drive off, leaving Lindsay behind. Poor kid didn't know what to do. Probably a bit cruel actually, but both DH and I had parents that did that to us when we were kids LOL.

I've also done the usual too with not being able to open lids/bottles etc and faking that there is any chocolate left in the house when they find the wrappers.