Target offers the Elmer's Washable School Glue 4-oz. Bottle, model no. E304, for 50 cents. (Amazon charges the same for Prime members.) Opt for in-store pickup to avoid the $5.18 shipping charge. That's the lowest total price we could find by $2, outside of the mention below. It's non-toxic and washable.Walmart charges about 20 cents more via in-store pickup.