Step 4Deploy!
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Time to deploy! These can be attached to your target surface a number of ways. Magnets are great for metal surfaces. This is heavier than the usual throwee so attaching to moving objects requires a really strong magnet. Old fashioned string is another option. Don't overlook aquatic deployment! If your throwee is in a waterproof container you can tie a string to a rock and heave it out far enough to where most folks cant get to it. Make sure your string is longer than the depth of the water and use a plastic container. You know people are gonna try to pummel the flashy thingy in the water with rocks!
I wanted to have fun with the drunks that sometimes wander down my street so I put my throwee in a tree on the easement. I used an automotive hose clamp that was pulled open to serve as a kind of hook and attached it to the throwee container with about 3 feet of cord. Toss the whole thing into a tree and it stays put.
Now it's just a matter of sit around and wait for the drunk to spot the UFO in the tree!