Simple seed starting flats with clear covers are readily available at garden centers and online. Some even include a warming mat to provide a little bottom heat. Then purchase a seed starting mix for best results.
If you don’t want to purchase a mini-greenhouse seed starting flat, you can use paper cups with holes punched in the bottom or better yet roll-your-own newspaper pots (search “newspaper pots” online for directions).
Set the cups or paper pots on a cookie sheet lined with foil, and then slip it all into a clear dry cleaner bag to create a great make-do germination chamber. Stick a few plastic fast food knives or popsicle sticks in the pots around the corners and center of the tray to hold the bag above the mix and germinating seeds.
Keep the mix moist but not soggy wet. After seeds germinate, remove the cover or clear bag and move them to a bright window on the south side of the home so they can get as much light as possible.
If light is lacking in quality or quantity the seedlings will be spindly and flop over. Plant lights are available to step up your game, but you can also use two 4-foot shop light fixtures each with one cool white and one warm white tube suspend 2-3 inches above the seedlings. Add a plug-in timer from a hardware store set to provide 14 hours of light a day.