Using todo-lists and Personal Knowledge Management tools as a second brain has always been a great intellectual pleasure, and really makes a difference in my everyday life.
Obsidian is such a great tool for that purpose, and its ecosystem is so rich.
I'm using it along with the Sync subscription to transparently sync my vault between my computers (personal, work) and my mobile phone and tablet.
If you don't know Obsidian, you should definitely check it out.
Youtube has some great contents on that subject.
Here are my own suggestions to make this experience even better.
I've been using an old HP laserjet 1018 printer for ages, but it can only be used from a connected USB computer and there's no driver available for modern Windows versions. So instead of getting a new wireless-enabled printer, I'd rather upgrade it to allow wireless/remote access from any kind of terminal and OS (windows, unix, android...) using a Raspberry Pi.
Even tough I find it depressing that we may have to live with all this covid chaos for a long time, I can still find some joy and motivation when thinking about some making/DIY projects for this winter...