Clearable items are rocks, branches, Plunderseed Vines, crystals, old trees, airship remains and ooze that are scattered around Ponyville, Canterlot, Everfree Forest, Sweet Apple Acres, Crystal Empire and Klugetown. Just tap a clearable item and confirm that you want to get rid of it, and away it'll go! Remember: Removing clearable items requires a certain amount of Bits or Shards of Harmony and takes some time -- you can skip the timer with Gems anytime you want to.