Correct sentence: Put your toys in the toy box so you can find them more easily.
Why:
- We use more easily because we are describing how you will find the toys. Words that describe how you do something are adverbs. Easily is the adverb form of easy. Saying easier is okay when you compare things (it is an adjective), but here we need an adverb.
- The word so makes the sentence sound natural: "so you can find them" means the same as "to find them," and is easier for speaking.
Short versions you can use:
- Put your toys in the toy box so you can find them more easily.
- Put your toys in the toy box so you’ll find them.
- Put your toys in the toy box. You will find them more easily.
Quick tip: If you are describing how someone does something (how you find, how you run, how you speak), use an adverb like easily, quickly, or slowly.