I’ve built up a collection of cacti and other succulents over the last year or so. They’re desert plants from the Americas and southern Africa which store water in their bodies, so they don’t need a lot of looking after, and they have a huge range of dramatic shapes, which explains why they’re such popular house plants. They’re also cheap to buy- mine all came from the supermarket, Wilco or IKEA and cost £2-4 each- and can live a long time if kept in the right conditions. (Opuntia cacti also produce delicious prickly pears and nopales pads for cooking). My current room has a large windowsill which gets some fierce sunshine around lunchtime, and is next to a radiator which dries up the air throughout the winter, which is the ideal conditions for growing them. I used to be into growing orchids and indoor herbs as well, but they just don’t thrive in the conditions here.