Walmart offers Cra-Z-Art Washable Glue Sticks, Disappearing Purple, 2 Count for $0.74 with free store pickup.

Product Description:
Cra-Z-Art Washable Glue Sticks are purple so you can see where the glue goes, but then the color disappears and dries clear - like magic! Easy to use and less messy than liquid glues. Perfect for school, home, or on the go projects. The water soluble formula dries faster and clearer, making bonds stronger and more permanent. Easily washes from hands and clothing with soap and water. These are school quality glue sticks that come with a turn bottom for more product as needed, and a tight-fitting cap to avoid drying out. Acid free glue lays down smoothly too, without clumping or breaking. Pack of two glue sticks are a great value! Be "always creative" with Cra-Z-Art!
Cra-Z-Art Washable Glue Sticks, Disappearing Purple, 2 Count

• Disappearing purple color shows where the glue goes, but then dries clear
• Pack includes 2 sticks with turn bottom and cap
• Glue sticks are easy to use, and less mess than liquid glue
• Water soluble formula dries faster and clearer, making bonds stronger and more permanent 
• Easily washes from hands and clothing with soap and water
• School quality
• Acid free