Grab a Tile Mate at Target before the school year starts for just $17.09; they're regularly priced at $24.99.
If you're unfamilair with this product, you can easily attach Tile Mate to keys, backpacks, and anything else you need to keep track of regularly.
They're on sale for $17.99, but for an additional 5% off you can sign up for a Target Circle Card, bringing the price down to just $17.09.
Look at these other Target deals — they're updated daily.