Real pets are hard work – you want the Pet Cactus Keyring. It's cuter, less needy and it won't stain the carpet.
Within this miniature plastic capsule resides a real, living cactus known as the Snowball Cactus (or Mammilloydia), so-called because it's covered in densely-packed white spines. Once this prickly chap outgrows the keyring you can liberate and re-plant him in a larger pot – he'll then start to sprout some lovely pink flowers.
'How do water this encapsulated cacti?' we hear you cry. Just dip the base in a bowl of water for a couple of minutes every couple of weeks, though this resilient little guy can actually survive for over a month with no water or sunlight.