Look through the boxes at the “Thrift” stores. Solid glass, oven safe is best. Lids that aren’t “Oven Safe” are still useful too!
The large glass lid shown above also fits the #8 Griswold Dutch Oven if needed.
This small lid, although not oven-safe, is still great for stove-top use, with an additional small Levcoware “Chef” skillet that I have. This one has no “Pour Spouts”, great for a single egg, sunny side up, over easy or basted!