Activities
Hands-on things to do — mostly from the cupboard.
Real, hands-on things to do together at home — making, painting, messy play, pretend, little jobs and rainy-day moving about. Most need next to nothing. Each one says the actual thing it builds, and where a material can be made at home cheaply and non-toxically, the recipe's right there.
How to use this
You don't need special kit or a "craft table". Pick one that fits the day — what you've got in, how much mess you can face — set it up, and let them lead. The doing matters more than the result; a wonky, half-finished thing they made themselves beats a perfect one you did for them.
These aren't time-fillers. At three and four a child's real work is play and making — it's how the hands get strong, the mind learns to plan, and the whole body gets ready for the sitting and writing that come later. Every activity carries the specific reason it helps, so you can trust it, not just do it.