I know I've written about terrariums before but I think they are the perfect solution to adding natural elements to your home. Especially if you're not much of a green thumb! Here are a couple places that have some great options.
There's a new collaboration from artist, Shane Powers and West Elm that I am loving. All you need is air and water! My favorites are the hanging glass bubbles and the cut clay cylinders.
If you have some other sources, I'd love to hear!