Walmart offers the Elmers Disappearing Purple Glue Sticks 4-Pack for $1. (Add two 2-packs to your cart.) Opt for in-store pickup to avoid the $5.99 shipping fee. That's 25 cents each and the best deal we could find today by $7. It is washable and non-toxic.

Stocking up? Amazon offers a 60-pack for $15.87