I have seen a few of these floating around but after trying several, I decided I would just make one that worked best for me. 1 magnet was not enough to hold the flashlight on a vertical smooth surface. This clip not only clips on easier and stronger but also incorporates two 8x3 craft magnets. VERY HANDY!

Print standing up and use support on the bottom of the magnet area. No need for support in the hole though.