For small, general media I have been using the nostr:npub18m76awca3y37hkvuneavuw6pjj4525fw90necxmadrvjg0sdy6qsngq955 upload feature so far, for larger and personal work I would only consider self hosting though.
Perhaps you want to look at Blossom Drive or nostr:npub1h0rnetjp2qka44ayzyjcdh90gs3gzrtq4f94033heng6w34s0pzq2yfv0g either as sensible service options or a self hosting solutions.