Description Reviews Buy 3 for only $21 Mason Jar Gumball Machine Puzzle. This DIY toy is fun, educational, and environmentally friendly. Take any regular mouth mason jar and turn it into a fun gumball machine. NO TOOLS or GLUE required. Just pop out the pieces and assemble. There is also a coin slot on the side so you can use as a bank, a great savings educational aide. 100% Biodegradable - 100% Compostable - 100% Post-consumer - 100% Re-useable Add 5oz of Dubble Bubble chewing gum! Below or in "ALL PRODUCTS" tab