If you do a search there was a long discusion about this only a few weeks ago with a ton of advice.
All my C-rings and lube are in my top draw.
My OHs top draw has her suction toys and some lube.
I’ve a cardboard box under my desk with all my male masturbators ( ie. 2 ), sterile lube, sounds, prostate and other anal toys. These are separated into layers. - boxes within boxes.
We’ve a big plastic tub with a waterproof pet blanket for massages and messy stuff.
And a big Ikea box on a shelf full of everything else. Underwear, restraints, ropes, chains, vibrators, dildos, games, more lube, blindfolds, etc.
And then you’ll find stuff dotted around the house.
Theres a card game on the dining table, dice and a suction toy currently on a kitchen work top. Another game and a multi-pack of lube on the living room table. My desk has lube, e-stim, and a couple of things drying. I’ve just noticed a stack of thin C-rings and a ball stretcher behind the monitor.
And atm there’s a box with a penis pump and lube in another cupboard.
Can’t forget the remote vibrator in the car door. Just in case the door needs some love..
And recharging cables .. oh how I wish someone would enforce a standard .. my PCs are used for most of it but we’ve also a more powerful one for fast charging downstairs.
Its a major panic when we find out anyones coming round.
As for separation, c-rings I don’t bother and so far have not had a problem. They likely get disturbed too often and are a mixture of materials.
For the most part we try to use the original packaging. If that gets battered, many come with cloth bags so we then use them, but 9/10 they’re plain black, which isn’t very useful. Still we have a lot thats just loose.
Most are wrapped in kitchen roll. Anything soft goes in paper towel for a good while before I use it. Any indication of it sweating obvious chemicals and it gets binned. Storing them in kitchen roll helps me keep an eye on it over the long term. Still no guarantee.
Dildos and vibrators are generaly stored flat and by virtue of their varying sizes and shapes, barely touch. We’ve only bought what we considered good quality and touch wood have not had a problem with silicone interacting.
We keep anal and vaginal in separate rooms and never the twain shall meet. All anal get used with a condom, go through a paranoid level of cleaning and after use are stored with a new condom on.