duvet, I thought the pervs on eBay aren't actually into nudity but weird shit like soiled underwear and abused shoes and they want to see them on. Nudity gets you nowhere in that scenario.
Bani, Axel Arigato might have some oxblood, the 'clean' models often have a matching sole.
I've been eyeing some of the Veja X Rick Owens Colab for my feet. Not really into anything like this usually but I'm drawn to the chestnut colour for autumn. They're unisex, maybe Mr Bani has an unexpected reaction to them too.
I think there may have been some Eytys trainers in oxblood on afound with a steep discount, they had thick white soles though. I think Onitsuka (sp?) Tiger has a oxblood/burgundy as a standard colour in their lineup usually (very underrated brand imo).
True duvet, paint is a bugger to get out, I've been looking at Javana paint for silk (which can also be used on cotton linen etc) you only need to let it dry and then fix it by ironing. That seems very doable but I'm not sure how much paint is needed, they only come in 50ml bottles that are €5 each. It can be watered down, which is probably what I'd want to get the layering effect of the check but that makes it even more difficult to calculate.