<p>Great idea! This is one of the best, most useful, simple to print, things I've seen.<br></p><p>When I make some I might try to make them a little deeper, just so I can put a label on it, or maybe a slot on the side so I can slide a piece of plastic into the slot where a label can fit on top. On the label I can tell the function of the circuit and the recommended fuse size. (I don't like to have to dig out the owners manual just to verify the fuse ratings). <br></p><p>Keep up the great work!</p>