Nerf N-Strike Maverick Toy Gun - I bought my son a toy, and I'm the only one playing with it.
I did this with a Nerf N-Strike Maverick toy gun, a Nerf dart six-shooter. Since it was ridiculously cheap ($8 each), I bought two so my son and a friend could have shootouts...
...I suppose that's not smart parenting on so many levels, but I won't go there.
As soon as my son unwrapped them, I opened one and starting shooting anything convenient.
That was hard to resist! -- but few other temptations avoiding being a target. My wife was a favorite, as were the much too delicate ornaments on the Christmas tree.