Laser tag is one of those sweet activities that, while fun, isn't enjoyed all too often due to the necessary equipment often being a bit too expensive. Well, you're an industrious and handy individual. What's stopping you from just making your own equipment.
Nothing, now that there are simple plans for doing it yourself. This homemade setup using a cheap laser pointer embedded in a toy gun and a microcontroller connected to a transducer, making all sorts of satisfying bleeps and bloops. Sure, it doesn't look all that pretty, but who cares? Homemade laser tag! Who are you to resist?