I use old Logitech Dinovo keyboards (no touchpad though), with a Logitech Mediaplay mouse (secondhand/new old stock only these days, and they seem to be getting rarer). The Mediaplay I think is a fantastic bit of kit, has media keys and works much like a remote, with a good range. Not found another mouse that works quite this way, and they seem to be increasing in price on eBay, mostly because of HTPCs.
The old Dinovo keyboards have a media control dial in a corner as well, although I don't use that as much. Rechargeable battery life is in the months for both bits of kit.
(I appreciate this doesn't fit the OP's question but mediaplay a variant with the RF option)