[emma_mcraf]

The problem with this time of year is that the young plants will be spindly as there's not enough heat and light on the windowsill. They'll do well if you do them in the spring however.
Have a scout around outside. There's still slender plantain, cat's eat and a few dandies about. Wash them well and you can bulk out any weeds with romaine and radicchio.
Then next spring you can start to sow seeds to grow your own weeds. If you can, designate an area to the weeds and over the years it'll mature and do well. Winter flowering pansies are also fine to eat.
Torts will also eat a little aloe and many of us use Nutrazu pellets, which can be fed a couple of times a week and are available from the SW shop.