How to make a mini paint shaker from an old electric toothbrush. DIY for airbrush - YouTube
Four E's Scientific Mini Paint Vortex Mixer - Lab Vortex Shaker, 5600rpm, Touch Function Portable Paint Mixer for Acrylic Miniature Hobby Model Paints Nail Polish, Blue - Walmart.com
HobbyMio Mini Paint Shaker | Color Mixer | Tools & Materials