Amazon.com: RPI Cell Dividers for Cardboard Storage Box, 36 x 15 ml Tube Capacity : Industrial & Scientific
Amazon.com: Chipboard Box Dividers 49 Cells for 2 oz (60ml) Boston Round for eLiquid Vape Juice, Essential Oils, Cosmetics etc. Fits Inside Any 12 x 12 Box Like Large Flat Rate USPS
Cardboard Divider Boxes - Cardboard Gift Boxes With Dividers
Custom Cardboard Box Dividers & Partitions | The Printing Daddy