Clones are a big part of trails, etc. They will be helpful once you get to text JS (JavaScript,) and these can sometimes be mandatory too!
All the rage on Scratch right now is 100% pen, but maybe you want to twist it up a little bit! Step 1: paint a new sprite and put a dot smack dab in the middle. Step 2: Make some code that goes like this:
and
next,
finally,
and you're all set!
wrapping up/toilet papering the Clones's house