Install on door to laundry room to give cat access to litter box while keeping the smell from going throughout the whole house. Note: Also good for keeping dogs out of the litter box! No more stinky litter box breath
Go kayaking (or canoeing) at night in the bioluminescent bay in Puerto Rico. It literally glows at night. go off the main island, if you go out of the bay it's a beach that you can only get to by kayak or swimming.