Cheaper painting materials for acrylic painting instead of stretcher

I like to paint and many pictures on canvas - but my 9-year-old daughter wants to join. I was in the hardware store the other day and saw some of the leftovers in the wood cutting department.

This is great: first, the boards are primed with white paint. Then the following colors look better (brighter).

You can now also use structure pastes. Either dye in or apply as they are. Great patterns can now be scratched (the paste has a fairly long processing time), with a spatula or with small sticks.

Shells or small stones look great when you push them into the still white mass.

My daughter is very creative ...

How to choose surface for ACRYLIC painting???? REVIEW: canvas and paper | March 2024