DYNALON, Holds 60 Test Tubes, Benchtop, Test Tube Rack - 401R40|225655-0000 - Grainger
Lily's Home Bamboo Test Tube Vial Shot Glasses Holder Rack, Great as Pen Stand, Made from Bamboo with Built-in Handle, Rack Only, Glass Tubes NOT Included, 6 Tube Capacity (7/8" (22mm') Holes):
uxcell Wooden Test Tube Holder Rack 6 Wells for 100ml Centrifuge Tubes: Amazon.com: Industrial & Scientific
Test Tube Rack, Wood, Double Row, 26 mm Tubes | Flinn Scientific