In addition the USB C dock I mentioned earlier, I got a three pack of antique brass metal wall plates for some outlets in the living room and an extra ink pen of the type I carry in my pants pocket. I did kind of need the wall plates, as that one wall is off-white with streaks of gold through the paneling and currently has brown plastic plates that don't match. The new ones should look much nicer, and were free thanks to that $12.50 gift card promo credit
The ink pen was solely to use the last of that credit. However, since I clip the pen in the corner of my pocket and the clip eventually breaks no matter how careful I am with it, it will get used eventually.
I started to buy a 65w USB charger & some USB C to USB C cables that were on sale to use with my Steam Deck, but passed because I was thinking the dock would do the job. The dock arrived today and it didn't come with a power supply, so now I'm regretting that decision.
I can make do with what I have until they go on sale again, though.