I was reminded of this when my husband came home one time with a coffee cup (one of those giveaways from an event at work) inside a box (one with a round hole so you can see the cup's design) and not even caring for the cup at that time, my top-of-mind then was: A Montessori Imbucare box!
We used this while waiting for our wooden ones.
We drop a cylinder in...
Open the box/"door"...
And reach in to get the cylinder.
This is a good material to introduce after the Object Permanence Box which we also did a DIY of.
Here's another Homemade Imbucare Box and Shape Sorter by Our Montessori Home.
Also, here's a DIY Coin Box by Bread and Roses.
And an almost empty bottle of contact lens solution...
And a couple of almost empty rolls of Washi tape...
Become a fine motor activity.
And here are other Montessori materials you can DIY using bottles--Smelling Jars and Tasting Bottles by Mama's Happy Hive.
Picture frames become Montessori dressing frames like this DIY by Montessori en Casa. Mama's Happy Hive also made some using quilting hoops and second-hand shorts.
Sometimes you see furniture and brave the saw to make it child-size like this DIY weaning table by Bread and Roses.
And other times, you transform a toy into a Montessori-inspired something--or in this case, an amazing 13 different things/activities using the Melissa and Doug wooden abacus by Planting Peas!