A walking stick I made in middle school outdoor education class ended up in an obscure corner of my parents house. Years later, my father added many relics from my past to it: feathers, rabbit's feet, and most noticeably an antler mounted atop the stick. The stick had an unfortunate fall, and a few of the antler tips broke off. However, this gave me an idea for an improvement. New tips were 3D printed, and cavities were left for flashing LEDs to be embedded. Two LEDs can be powered from the coin cell for many outings. The results look really good!
See a video of the antler below.