3-Pack of RoseArt Washable Glue Sticks – Link 
Amazon has this currently marked down to only 99¢
- Acid free glue
- Photo safe formula
- Strong adhesive
- Pack of 3 of clear drying glue sticks
- Easy twist tubes
- Certified non-toxic and easily washes off with soap and water
- Dries clear and is safe for school or home use
- Great for crafts