TCP Global Paint Mixer Attachment (Set of 2) - 14" Drill Paddle Mixer with 1/4" Round & 5/16" Hex Shafts, 3" Paddles - Mix 1 Quart to 2.5 Gallons of Paint, Epoxy Resin, Concrete, Drywall Mud, Mortar

i like using a plastic mud mixer drill bit directly in my french press to stir the paste up without the arthritis workout, but I wouldn't recommend it until you already have a good grasp of the texture and hydration the paste should be generally this is a bad price but you get the idea: https://www.amazon.com/TCP-Global-Mixing-Quarts-Buckets/dp/B08C33VNGF