Olivia and Cherish started some seeds last week.
They used toilet paper rolls cut in half as seedling cups, these are placed in an old cake pan and in front of a sunny window. I’ve also saved some cardboard egg cartons to start some seeds in. The lettuce seeds have come up quickly!
You need to know your growing zone and when you should start germinating your seeds inside. You don’t want to do this too early.
Here is a good post about factors affecting germination.