Propeller Balancer

thingiverse

You can create your own propeller balancer by printing the face part and purchasing these items: https://hobbyking.com/en_us/simple-prop-balancer.html (~ $1.5) https://hobbyking.com/en_us/3x37mm-alu-light-weight-round-stand-red.html (~ $6) If you don't want to buy pipes, try printing them with a small hole inside for skew threading or purchase something like this https://hobbyking.com/en_us/m3-all-thread-rod-300mm-2-pieces.html along with some M3 bolts.