Hi, just wondering if anyone has an idea of a plant that will be happy outside in a very small pot?

A friend of mine has bought me some very small novelty pots in the shapes of wellington boots and bumble bees bees etc and I would really like to have some pretty plants but I'm worried that the plant will not do well in such a small pot and wondered if there were any plants that specifically do well in small pots?

There are three of them and they do all have drainage holes which is good and measure approximatley 13 cm in height and 10cm width.