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.

I use a macmini as a music server and for watching hbogo and netflix, and I've been really happy with a small wireless Lenovo multimedia keyboard/mouse. It's unlike any other options out there, as it uses an optical "trackball" like those used to control blackberry phones and can be operated with one hand whenever you're not typing. The optical sensor can also be "pushed" to serve as a mouse click, which is really convenient. You really don't want to have a solution that requires both hands, or a mouse on a surface. I find those to be deal-breakers for couch-based computer control.

Anyway, the Lenovo doesn't always have perfect response, and I wouldn't want to use it to type out a full e-mail or anything, but for basic music control, movie selection, and web-surfing, it's really great. It also has a backlight so you can see what you're typing in the dark.

http://www.bhphotovideo.com/c/product/828530-REG/Lenovo_57Y6678_Enhanced_Multimedia_Remote_with.html