String of Pearls, or Senecio rowleyanus is succulent for indoors or out. This funky plant is very popular and requires minimal water. Keep it in bright indirect light.
When watering these kokedama, it is best to water little and often from the top. You can still soak the moss ball but only monthly and quickly, for 5 mins max. Still sit in a bowl or your sink as water will run off the sides.
This Mini size kokedama is about 10cm across the moss ball.