These would be great to use on the deck where I already use pallets! Popsicle sticks & hot glue gun make cute little mini pallet coasters! These are so stinkin' cute! Soak in tea/coffee to give them their color.
From a simple shelf to a complete house, wooden pallets are a fabulous material to upcycle with and what's more they're often free if you hunt around your local area or take a look on sites such as Freecycle.