Brainsnag Level 15 answer: Cookie Jar
The level says: “Reach the cookie jar”
Hints first (no spoilers)
Hint 1The kid cannot jump that high.
Hint 2Three boxes. One marked spot under the shelf.
Hint 3Stack all three crates on the dashed spot, then drag the kid onto the top crate.
Show the full solution
Drag the three crates onto the dashed spot under the shelf so they stack up. Then drag the kid onto the top of the pile; from there she reaches the cookie jar.