Put the tennis ball at the bottom of one of the legs of the pantyhose, you can tie the other leg up at the top so it's not in the way, set up the paper tubes so they are standing randomly about the floor. The player puts the pantyhose over their head so the tennis ball hangs down in front of them, they now have a set amount of time to knock over as many of the paper tubes with their "trunk" as possible. They must keep their hands behind their back and knocking over tubes with anything other than the tennis ball will not count. Most tubes in the time wins

Scoring is, as always, completely arbitrary, you can award only the winner, score points per knocked over tube, or award points on a sliding scale from most to least. Decide how you wish based on the number of players.

You can do this with string taped to the tennis ball and tied around the players head or to a baseball cap. Tennis ball can be replaced with something else if you don't have one.

Paper tubes can be replaced with whatever you have at hand, plastic or paper cups work well, if you put some upside down they are slightly harder to knock over. The items to be knocked over can also be numbered so they have to be done in a certain order.

I have done this where one leg of a second pair of pantyhose is tied to the leg of the first and two players each wear a pair and have to cooperate to knock things over.