She's a funny one

I was folding laundry in Evelyn's room and heard some slightly distressed sorts of noises coming from Nate's room, where Evelyn was playing. I promptly investigated and what I found was so hilarious that I subjected her to several pictures before helping to release her. This is what I found: 

"Maybe if I flap my arms really hard I could fly out of the box..."

 "Guess I'll just chill here until mom decides to stop laughing and gets me out."

How in the world did she manage to get into the box? Especially without it tipping over? I have no idea... 

She's never been able to climb onto the train table that her feet are resting on. She is our silly little nut and keeps us laughing!