New Lighter V2 version at: https://www.myminifactory.com/object/3d-print-mini-storage-trays-and-shelves-light-weight-84929
This is the "Heavy Duty" version suitable for metal minis. It's a little overkill for plastics.
I wanted to keep more of my minis from games such as Conan, Massive Darkness, Nova Aetas, Zombiecide, Swords and Sorcery, Mythic Battles, and others visible. Shelves are typically too deep, specimen drawers are expensive and enclosed, and risers don't make use of the space well.
So I've made an organizer that works like a desktop file holder, but instead is modular and lets you put your minis on display. The minis bases fit in the channels in the tray for easy retrieval. You can pull out a tray for any given game then slip them back in when you're done. The depth of the trays means you can store like models in a row while still showing off the breath of the collection.
For my particular shelves I've divided them so I can print the system on a Prusa MK3. That means two 3 tier shelves, two 2 tier shelves, and 12 trays per 200mm of linear shelf. The trays will hold roughly 36 minis each, depending on how compact they are. That's over 400 minis per liner 200mm of shelf. The system is designed to fit snugly together. For my particular setup tall and monstrous models will live on the top shelves, but I will add more options for spacing as I start to sort my collection into the system.
As far as I can tell right now the shelves themselves should fit snugly and not tip or fall, but a dab of superglue on the feet and corners between sections may provide some insurance. I will experiment with ways to weld the mini trays together.
v0.5 - Initial Release
v0.6 - Added Additional Shelf Heights
v0.7 - Added Additional Shelf Heights and Trays
v0.8 - Added option for trays with a slight lip to encourage minis to stay in place when moving the tray (may need to be adjusted still)
v0.9 - Improved layout of trays, added more trays, added 60mm shelf height
v0.10 - Added labels, added shelf clips for stability, added embossed size indicator to trays, added 32mm base tray for HeroScape models
v0.11 - Added 1.2mm crossing braces to help reduce wobble during printing. Added 0.6mm nozzle cura profile for rapid printing.
v0.12 - Trimed the trays by 2mm to give them more clearance when sliding into the assembly. Removed the 25-35 mixed tray.
v0.13 - Added camphor to the trays so they can slide in easier without catching on the shelves. Adjusted and renamed the tray clips. The most important clip is the "Clip - 4 shelf horizontal" as that will provide a lot of lateral stability to the shelves in a 2-deep configuration.