@mhoye Using a broom instead of a shovel to clear powdery snow (up to a few cm), especially on rough surfaces like asphalt.
Carrying a multitool/Swiss army knife on my belt. Crazy useful.
A little bigger, but: Getting a used countertop induction cooker for $25 off craigslist. It doesn't fully replace our gas stove, but I do almost all my cooking on it now and it is better in *so* many ways... and I can stash it away when not in use. I even brought it to a hotel so we could cook in our room.