You don’t have to be inherently creative or spend a lot of money for your young child to benefit from what a Montessori-inspired learning offers. You can apply the principles to act as a bridge on what children learn at school or just embrace it because it's a great way to connect to your child as a parent.
Personally, one of the key principles that really resonated with me as a parent is this:
"He does it with his hands, by experience, first in play and then through work. The hands are the instruments of man's intelligence." ~ Absorbent Mind
In Montessori, children rarely learn from texts or workbooks. In all cases, direct personal hands-on contact with either real things or with concrete models that bring abstract concepts to life allow children to learn with much deeper understanding.
Children not only select their own work most of the time, but also continue to work with tasks, returning to continue their work over many weeks or months, until finally the work is “so easy for them” that they can teach it to others. As a mentor, this is really one of the ways to check on mastery - the ability to teach back what has been learned and there is no better way to learn anything than by experience, especially for children below 6 years old who are Concrete Thinkers.
Again, just remember THE PRINCIPLES and you can start by embracing just one, like MOVEMENT or INDEPENDENCE (and you can start with practical life activities). You can use whatever materials you have at home.
Here are some samples of what I prepared for Kara.