Gridfinity organizers for resistors or other small parts.
One bin is about 15 mm wide and 64–80 mm Long (range due to label tab).
There is a higher and lower version depending on how much you want to store.
This is a remix and is 100% compatible with normal gridfinity but I have replaced the base from the original to remove the magnet fixing base and converted it for gridfinity with pin by adding the base from that as that system requires no magnets. This gives you more flexibility and when clicked into a base this is very solid.
If you want to use this option the gridfinity with pin bases are here:
https://makerworld.com/en/models/440624#profileId-346300
The author remixed this model.
I replaced the bottom of the storage bin with the bottom of the gridfinity with pin compatible bins to make it compatible.