Terrariums!
My partner and I spent the weekend making terrariums! I found it to be really therapeutic, and a good way to do some 'gardening' even though we only live in an apartment.
They're also quite cheap to put together... The glass enclosures in the photo are about $10 each at Kmart, and some of the components (e.g. pebbles for the drainage layer, moss, etc.) can be found literally on the street or by the side of the road.
Anyone else ever made one of these before?