Montessori Siblings: How can I keep my infant or toddler from distracting my older child and messing up his shelves?

I received a question from a reader asking how to support her toddler’s work now that her infant is crawling and can get to his shelves and also distract him while he  is working. I thought I’d answer with a post. While the original question specified infant and toddler, I think this can be an … More Montessori Siblings: How can I keep my infant or toddler from distracting my older child and messing up his shelves?