You might give African violets a try. They come in different sizes and you will find ones that are a perfect fit for your windowsill. Also, you can try bromeliads or a jade plant. Since it is in the kitchen, you might create a windowsill herb and or vegetable garden...I'm sure that other goy members know which herb and veggies are suitable for the windowsill.

Hi, Saintpaulia like a bright diffused lght, and a south facing windowsill may be ok in winter, when they like the best light available, what they don't like is full summer sun, bromeliads also like a bit of midday shade in summer, Derek.

See if you can get hold of Rhoeo spathacea 'Tricolor' - great little plant, easy to root bits when it gets too big, needs sun to keep a good colour. I've got a couple here, but don't really have anywhere sunny to keep them - so far, I've given away several I've rooted up for other people, they look good in a sunny position.

African violets are nice neat little plants but mine does best on a north facing windowsill. Had you thought of herbs?

Thanks for all the replies. Yes, I had thought of herbs but they grow far too quickly even when (especially when) picked. I don't want the plant to take up a lot of space and interfere with the taps and window blind.

I'll look out for the Rhoeospathacea that you mentioned, Bamboo. Thank you.