Turso is a serverless SQLite platform designed for the edge. It runs libSQL, their open contribution fork of SQLite.
Every Val Town user automatically gets their own Turso SQLite database! It's great for >100kb data (ie bigger than a val) or when you need SQL: relations, ACID transactions, etc.
For all your other SQLite needs, you can run SQLite in WASM and save data (<100kb) in Val Town. See:
SQLite wasm