Hi there STalkers!

TL:DR - where do STalkers hide from their skids, when they can't hide in their bedrooms?

Some background - I'm a childless SM to two. SS8 has significant behavioural issues - potentially ODD or ADHD. Violent and sexually inappropriate, meltdowns and screaming are a pretty normal part of our lives at this stage. I'm entirely disengaged, which is the only thing that has helped DH start to see the degree to which the behaviour is problematic, but it's all "Woe is me, his mother is making him like this and there is nothing I can do, I just have to let him do whatever he wants or else he won't want to come around anymore", so I'm not expecting any change in the behaviour in the forseeable future.

I live in south-eastern Australia, in a very small detatched house. I know most STalkers are US-based, and houses in metropolitan Australia are much smaller than in the US in general, but in terms of square footage my place would qualify for that 'tiny house hunters' show.
During the week, I love it - vacuuming is a breeze.
When the skids are around on the weekends, there isn't a single room in the house you can't hear them from if they're talking at their normal volume, even with headphones on. It goes from my perfect little dream cottage to a claustrophobic nightmare.

Normally, DH takes the kids out fairly regularly on the weekends, and I happily pay for whatever theme park or play center they want to go to and lunch (DH works part-time on a low income, it's the only option if they're going to be taken out) to get some peace and quiet.
We're in the middle of a hideously cold winter though, easily the worst in the time DH and I have lived together, and he's decided (understandably) that it's too cold and wet to make the skids leave the house at all when they're around every weekend.

We're approaching another weekend, and cabin fever is an understatement. I am going to end up on True Crime if I'm locked in a tiny box with the skids for the next two days. It's going to be like The Shining. The last few weeks, I've had a panic attack almost every weekend - something that previously hadn't happened since highschool. I'm approaching the point where I'm scared I'm going to snap and hit one of them (obviously NOT okay and to be avoided at all costs!).

I'm normally an absolute hermit who would prefer to spend all her weekends reading, baking, gardening and doing things around the house. I have no social network in my area (And no local library, which would be my default).
I need some pointers. I have to evacuate my tiny house for as much of the day as I can for the next two days, and damned if I know where to go. It's freezing cold and bucketing rain every day, I can't drive at the moment (medical), and we're flat broke to the point where pottering around the city and getting a manicure and lunch would bring about the apocalypse.

Where do you ladies hide out, when you have to escape the skids and can't have privacy to do so anywhere in your own home? I know I'm not the only STalkers whose skids have free run of their bedrooms despite begging and pleading with DH. Has anyone found a zen sanctuary to be their home-away-from-home, when their home is taken over?