"Some wireless mice are fairly lightweight. My preference is for a wireless mouse because even gentle drag from the cord is distracting ..."
BluTackiPedia: of the 10,000 Uses for BluTack, listed at Number #6,741 is "Tack down the rodent's tail at the edge of the desk with about four inches to spare".
I too found the drag of the tail irritating, and found My Malleable Mate was just the ticket.
In case anyone's interested (and you really, really aren't), at #7,173 is "Stop the bloody USB hub sliding all ovet the place", with a late, topical entry at #103: "Secure Faraday-Bacofoil Around Imbecile".