I'm lucky enough to have a dedicated room in which to store my more delicate TPE/seamless figures - nothing fancy, just a (usually) spare room that doubles as a home office - which gets little hard light and stays cool all day. I've got around seventy seamless figures, now and the numbers are still steadily growing. There will surely come a point where Mrs Willikers will say 'enough is enough'.
The most 'precious' of these seamless figures are kept unclothed in airtight plastic boxes, each figure dusted and separated by hard plastic dividers covered in a layer of bubble wrap. To ensure there's no chance of them 'sticking' to the wrap I also dust the wrap with talc and regularly move the figures around.
More 'ordinary' permanently-clothed figures (mostly those with jointed bodies) are simply left out in the open, displayed on modified shelving.
I live in the North of England, so there isn't much hard sunlight or humidity to worry about.
The most 'precious' of these seamless figures are kept unclothed in airtight plastic boxes, each figure dusted and separated by hard plastic dividers covered in a layer of bubble wrap. To ensure there's no chance of them 'sticking' to the wrap I also dust the wrap with talc and regularly move the figures around.
More 'ordinary' permanently-clothed figures (mostly those with jointed bodies) are simply left out in the open, displayed on modified shelving.
I live in the North of England, so there isn't much hard sunlight or humidity to worry about.