I use a 2008 Dell Inspiron laptop as an office PC. I upgraded the CPU, which would be absurd for a new notebook. I also upgraded to 4 GB DDR2, and an SSD. It still works great!
I think it’s always best to keep things maintained and continue using them instead of buying new things. Maybe some of us have a bunch of old stuff laying around. But what stuff are you still using?
A Thinkpad T60 (2007) fully upgraded to write.
A Powerbook G4 Titanium (2002) for Garageband.
An iPad 4 (2012) for Garageband mobile.
A Philips television (2007).
A Casio Marlin W-36 watch (1983).
A Sinclair C5 e-trike (1985).