Wireless keyboard and mouse

Amazon has a house brand bluetooth keyboard I've used with an iPad. I haven't put a lot of miles on it so can't speak to the reliability but it works well and it's cheap.

I don't have any experience with bluetooth mice but have a Logitech M315 wireless mouse that transmits to a tiny receiver you plug into a USB port on the computer. Works great and has been trouble free after quite a bit of use.

I've been using a Logitech for several years. Inexpensive, works perfectly.

Microsoft also make decent Wireless Keyboard/mouse combos, i have used a few and never had any problem.