Here's a demo of me testing out the product.
Step 1: Materials Needed
You will need:
-Nerf Hoop (No netting or backboard)
-A sharp paring knife or hunting knife
-A rubber band
-Bent out paper clip (optional)
-Hack saw (optional)
Step 2: Cutting a Notch
Take the nerf hoop and paring knife and cut two slots where you want to fit your 'arrow'. This may take a while since you're cutting through plastic. Once you've cut through you can smooth out the rough plastic if desired with a file.
Step 3: Attach Rubber Band [Finish]
You're now ready to use your 'bow'. Grab the Aroma sticks. [This will be your arrows]. If you want to have them fly straighter insert an unbent paper clip through the core of the aroma stick. This should be fairly easy since there are premade holes for the oil.
If you want a semi circle bow just take your hack saw and cut it down the middle and follow the same steps. You will need a larger rubber band though.
Good luck :)