lovely cactiiii. Spider plants. My flat is too bright for most plants so it's full of spikey succulents which bite you when you go near them. African violets seem to be quite hard to kill. And peace lilies.
Aloe vera. I have failed to kill the one I was given when YB was a baby despite over-watering, under-watering, and letting it get pot-bound. It's still going strong and I pull off a leaf now and again to put on kitchen burns.