This is a cannon. The ammunition? Papercraft designs! You will need a straw. To put it together, first cut out the block. Then cut the white bits away so the straw can go through. Then, fold it up and stick it together. After that, put your straw through. Then, put the slab together as normal. Stick the two yellow "glue" parts together. It's finished! To load ammunition, you put the ammunition on the dark circle. To fire, blow through the straw. I believe that it would go well with a target. Not enough yet? There's an optional cannonball sheet.
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