If you’re after an easy houseplant, cacti can be a great solution – they’re very tolerant of when you forget to water, or when you’re away and can’t. They’ll also cope take hot or cold extremes really well so are great for conservatories, for example.
Succulents are equally tolerant of forgetting to water, but don’t like it too cold.
Both hate over-watering!
We’ve got a good range of both and if you start with small plants they’re great value too.