There are many seed starters you can buy at local garden centers and nurseries. You can even save money and be a little eco-conscious by making your own biodegradable seed starting pots. Then there's a whole world of possibilities in things you can upcycle into seed starter pots like a ghetto greenhouse made from plastic soda bottles, and this seed starter from an ice cube tray.
A little backstory: I came across this idea one day when I wanted to buy seed seed starting trays with individual cells for multiple starts. Instead of buying the seed starters to make I came up with the seed starter ice cube tray. The idea is similar to starting seeds in cardboard egg cartons, but this seed starter can be reused and can last you for a couple of years.