I've produced 6 different designs in the bows and Seven bottle caps that can be interchanged. Four of the bows represent the Four elements while the others are more in tune with the 5th element, spirit. The bows are all 4 inches wide whereas the bottle caps are 1 inch in diameter.
Air bow along with the Air bottle cap.
The Earth bow with the Earth bottle cap.
The Fire bow and bottle cap.
The Water bow and bottle cap.
Black and silver bow & Pentacle bottle cap
Triquestra bottle cap
Purple and Black bow with pentacle bottle cap on and off.
If you would like to get into making bows yourself it is quite easy. On the references page I have up many links to sites I found useful for free tutorials. Also check out Youtube. I didn't spend anything on materials or tutorials and neither does anyone else. There is plenty of free information on the web.