Storage Tower - or 30 gallon tote 'book' case. Optionally could use cleats on side for shelves between units. Two of these with horizontal cleated door would be a workbench. Expandable modular storage.
Mini Greenhouses Just clear plastic storage boxes, group the plants in them according to their cold tolerance. That way you can pick up a box and pop in the house when it’s too cold for them. It’s also easier to move plants around to find them more (or less) sun exposure.