We have a linen closet that for a time in my childhood was emptied out and made to serve as the “Nintendo room”, containing an NES hooked up to an old Commodore 64 monitor. I still associate that fabric/crafty smell with 8-bit gaming.
I also love the smell of sun soaked dog fur.
The smell of firing up a brand new toaster. It’s a very particular smell and an extremely rare one. I think I’ve only smelled it 3 times in my entire life. That’s less than once a decade.