Moment offers several tripod mounts compatible with MagSafe-compatible phones, but my favorite so far is the multi-threaded mount. It’s simply a flat metal disc with several holes drilled into it (also why this type of assembly is affectionately called a Swiss cheese plate), and each hole corresponds to a different size tripod screw.
It’s small enough to attach to any camera kit and versatile enough that I’ve yet to come across a tripod I can’t use it with. Once you place your phone in the mount, it sticks to it with a surprisingly strong magnetic grip. It’s just a great tool to have on hand and I’ve used it a lot more than I thought I would. It’s worked for everything from stabilizing my phone for video calls to turning my phone into a backup “emergency” low-light landscape shooter – when I forgot to charge my camera batteries before going on a scenic hike in the beach.
This one is specifically for use with Apple’s MagSafe technology, but Moment offers a number of MagSafe adapter cases for Samsung, Pixel and OnePlus Android phones.