In previous years this was of course a QOTW post, but as HEXUS has ceased publishing I decided to do so myself as I'm sure the answers can still be interesting.
For me, I got a couple of t-shirts on a discount and renewed my Internet Security software for another 3 years.
The latter however was because it was the end day that it happened to fall on (and thus the last day to take advantage of the renewal discount), due to it originally being bought on a Cyber Monday discount.
I did consider letting it expire and getting it cheaper on a Cyber Monday discount again, but I suspected they may not even do the discount this year (as there clearly wasn't a Black Friday one), which seems to indeed be correct after checking today.