"A bit of a weird suggestion, but a heated floor mat (like the ones for offices) are a semi-common thing I see in "battle station" set-ups. Keep in mind that these are only useful for users who are at their desk for several hours at a time,…"
"This is a lousy idea. What's the endgame? A fussy letter won't win her back. It probably won't even make her feel bad for him. It's more likely to make her happy that she escaped this unstable schmuck when…"