We didn't give them the wireless mice or keyboards. Originally we bought Macally wired peripherals off of Amazon. Would not recommend them specifically since they feel cheap and even had one DOA. We bought a bunch of the USB-C to USB adapters and used some of the old mice and keyboards.

https://www.amazon.com/gp/product/B07X5V3XGZ/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&th=1

I don't believe Apple makes ANY wired mice/keyboards now.