I use packing tape (dollar store) for most pieces and double sided tape (dollar store again). I put 2 ,3 or 4 pieces of double sided depending on the size and then cover the top with clear tape, making sure to wrap around the edges. If the project has many small frets, I use the blue tape first. Has anyone tried the green tape? I like the idea of using a throw away top piece!!!! Sometimes my patience also runneth thin!