Well, the light is waning at this time of year, so you might want grow-lights. I always spill water around pots, so give it a good water tolerant surround. You could dig up strips of real meadow and see if you can use them for starters.

Considering that meadow plants are adapted to a temperate climate (cold winter followed by warm summer), I don't imagine they'd do too well indoors year round. Also, the seeds will probably need a cold period before they germinate, as they would have in nature. There's a reason that most houseplants are from the tropics, rather than natives of temperate climates.