yesterday I couldn't think of any thing to build after a while I came up with a boom cannon from the game boom beach.
Step 1: The Barrel
Step 2: Build the Shield
Step 3: Connect the Barrel to the Shield
Step 4: Make the Back of It
Step 5: Build This
Step 6: Connect It to the Barrel and Shield
Step 7: Build the Stand
Step 8: Connect the Stand
Step 9: Add These Pieces on Both Sides
if you build this post a picture in the comments.