$6 Macro Tilt Lens without glue or duct tape

Step 4 Cut a hole in your body cap

Cut, melt, and/or nibble a hole into the middle of of your body cap, slightly larger than the inside diameter of your hose.  This will allow you to fix (or screw) your hose onto the body cap without glue or tape.  Ideally, you should find a hose that the lens fits into but allows it to move and twist (to focus).