Okay, I hope I didn't shoot myself in the foot... I ended up getting a wine aerator, which is this nifty little thing you put on the end of a wine bottle, and it decants your wine as you pour. No more waiting for hours for those 30 year old Bordeauxs to decant.
I also got them a wine bottle holder that will keep your wine chilled to the exact right temperature. This one might be something you put in the closet and re-gift in six months... but I do think they'll get good use out of the aerator.