I'm dragging my sewing machine with me until I find the right fabric to recover my driver's seat (air-ride

) and the two original bench seats I kept. And maybe even the bed-boards.
I got my machine used. The guy said "buy old Singers because they have all-steel gears." When the Singer family (in the 1970s?) sold out to corporate America, the new execs cheapened it all. Mine's a 1960s model, and it runs like a well-oiled .... ah .... sewing machine.
I made my curtains out of black and navy-blue bedsheets folded in half. They back the factory dark tinted windows, and black them out. I just stitched little pockets for neodymium disk magnets, and hold them in the pockets with safety pins (to remove for the washing machine). Just short runs .... 1" in two directions .... I started by hand, and got 3 stitches in before my fingers cramped and my eyes were fatigued, and I pulled out the Singer. So much better! I was thinking of getting those "emergency" / "space" blankets that are reflective aluminum between two sheets of plastic (you know, the ones they give the kids in the concentration camps on the border) and somehow making double-sided curtains, so they could reflect the sun in the day, the interior lights and radiant heat at night, plus they fully block the interior lights from showing to the outside if I'm stealth boondocking in the city.
Saw some black vinyl with a "rainbow" sparkly effect that changes as you shift perspective or lighting, but then it sold out before I committed to it. It reminded my of Pink Floyd's "Dark Side of the Moon" cover. They have "Pink Floyd" licensed cloth in several styles, as well as "Grateful Dead" in several styles, but the cloth is cheap quality for big $$$. I looked for months for fabric for my old van, never found what I wanted. I hate vinyl, until you spill something.