Hardy Plants for Hanging Baskets

Hi, I know it probably sounds like an odd thing to want to do...I'm new at gardening...

I have a very small East-facing garden (10m x 6m), and only have room for one of those plastic-covered, four-shelved, unheated (obviously) greenhouses and finding it difficult to keep the usual tender type plants for baskets till it's warm enough to hang them outdoors.

Can anyone please recommend any hardy plants that would do well enough in hanging baskets?  Thanks