Weck makes nice little jars that you can ferment with the gasket/lid just unsealed, there are also some places that sell fermentation toppers for them. I've found them a nice size for small home fermentation since you can get a few different sizes (700ml, 1000ml, etc) that make it so you can step down easily after primary fermentation. Then when you aren't using them you can use for storing food/canning etc.
The main thing you need, if you are adding yeast/nutrients etc, is a precise scale! Which a lot of homebrew stores will sell, since for 700ml you're adding something like .175g/yeast.