Get at least 1 old Google pixel (1-5). Free unlimited uploads. Create 5 accounts. Duplicate all the time.

get a backblaze account. Dump there.

Amazon glacier. Cheap store.

get a MS one drive 1TB (maybe you can get some school discounts)

learn rclone and run scripts automatically to upload to all these services.

for all DH- nerds: though I know mom’s running Supermicro not everyone has time.