Who needs Laser Tag …

When you can play Alka-Seltzer Tag for (nearly) free and stay cool at the same time?

Set-up is very easy:

1. drill a small hole through the center of an Alka-Seltzer tablet
2. thread a string through the hole.  Make sure the string is long enough to tie around a person’s neck so the Alka-Seltzer can be worn as a necklace. 
3. have lots and lots and lots of water.

Then, the object of the game is to get the other person’s Alka-Seltzer wet.  As the tablet reacts to the water, it will start foaming and eventually fall off the string.  The last person with an Alka-Seltzer necklace is the winner.  As an alternative, you can divide into teams instead of every-person-for-themselves.

The kids would love it.  Some of the adults would, too, I suspect.