THey are so cute because their logic is working, they just don't have the "years of experience" that we do. So what is logical to them can be quite surprising to us.
One of my favorites from our kids (they were a bit older than toddlers) was a Mother's Day card from our eldest. The format of the card was a series of questions my daughter had to answer about her Mom. The question/answer that I liked was:
Q: What would you give your Mom if you could?
A: Her own room.
It seems our daughter thought it was sad that her Mom & I had to share a room. We didn't try to explain it to her.