Last year, I got DH a little camera on a gyro - not a Go Pro but a smaller, handheld one (something like this, a friend had bought one and DH had seen it in use and was smitten but waiting for a sale...and was really shocked and pleasantly surprised at it! 
He had NOT expected it. (I got tickets for the Guns'n'Roses gig this summer, which has now been rescheduled for next summer but we got a refund instead - no sign of an alternative present yet though!).
I have a couple of smart arsed tshirts about engineers bookmarked (about how they know it all, aren't arguing just informing, or that I am an engineers wife and he really does exist) - any of which could be true, (of DH, DBro, DF....!), which I might get.
And some small multitools for bicycles or general use.
I usually end up going to the decent off-licence (right next to our version of Westfield - Dundrum!! - so traffic chaos all December....) in mid December to get a few craft beers (DH likes both winter and Christmas craft beers and this is the only place to get a decent selection anywhere near us).
I got him a good pair of slippers a couple of years ago (the brand image has an elf/moose head, but I can't remember the name) - they were great until he wore them loads in lockdown, and reckoned they needed a wash but the soles got very sticky as a result so are now unwearable - might get him a new pair (possibly with removable inners...or some pairs of fluffy socks to wear at the same time)….
I was actually contemplating a firepit - as we look like spending a lot more time at home again this winter. It might be a good time of year to see if there are camping chairs in end of season sales, to get good ones (our regular chairs are foldable so have large gaps in the back but my camping ones have fabric backs so less wind to whistle through in winter...) if you are thinking that way.