16mm pole tray

thingiverse

A tray that attaches securely to vertical frame pipes of a greenhouse or grow tent. Designed specifically for thermo-/hygrometers with single legs, which lack attachment points and cannot be positioned reliably without falling into the soil. This versatile tray can also hold small items. Multiple trays have been printed to maximize vertical storage in my tent, preventing unused space from going to waste. However, if you have an extraction fan in your tent, large items may be affected by negative pressure. This could cause walls of the tent to collapse inward, knocking over items on the tray. A solution is to tie a piece of string or metal wire around the pole and the item being stored. For smaller items, this won't be an issue. The best solution found was to drill a hole in the plastic leg of a cheap thermometer and run a string through it.