A few years ago I got 5 pots from IKEA measuring 12cm in diameter and 12cm tall. I've tried having herbs in them, but they are just way too small for anything to grow nicely for more than a few weeks, so now they've been sitting in a box for two years.
However, I like how they look and I really want to figure out how to use them. I recently moved to an apartment with a balcony and I'm starting a gardening project. I've got the following seeds: sage, thyme, rosemary, oregano, chives, dill, parsley, basil, coriander, peppermint, spearmint, marigold, pansies, harlequin, passionflower, spring onion, dwarf snap peas, baby carrots, beans, spinach, salad, tomatoes (tumbling tom, sweet pea currant), cucamelon, jalapenos, sweet pepper, wild strawberry and strawberry temptation.
I know most of that can't grow in those tiny pots, but if any of it could please let me know, and if you have any ideas for some plants that would be able to grow in small pots (probably some semi drought resistant ones, I think they're going to dry out fast on a hot day) then I would much appreciate it!
These are the pots: http://www.ikea.com/dk/da/catalog/products/10155671/
EDIT: They do have drainage holes, I live in denmark and an alternative to placing them on the south-east facing balcony would be a north-west facing window sill.