Check out Ayn Odin 2 Mini, it's an Android handheld with a PS Vita design, you can use it to emulate lots of games too (including Vita using Vita3k emulator).
At first, I thought it was like $35, and was almost ready to order it. Then, I realized, in my morning haze, that I'm not seeing the decimal point, and it is actually $340.
For that kind of cash, you might as well get the real Vita from a second-hand market. Better yet, for that kind of cash, get Steam Deck, unless you have some restrictions like OP (i.e. "SD is too big")
