.
One possible solution is this
+-------+-------+-------+-------+
| | | | |
| | | | |
| | | | |
+-------+-------+---+---+---+---+
| | | | | | |
| | |---+---| | |
| | | | | | |
+-------+-------+---+---+---+---+
6 large squares 2x2; 4 small squares 1x1, and 2 rectangles 2x1.
You can move and change these figures by OBVIOUS ways to obtain
several/many other possible configurations.
Perhaps, children in pre-school may assemble other similar configurations, too,
if you show them this one as one basic solution, and will be happy, doing this intriguing job . . .
from breakfast . . . to the evening meal . . .
You will only have to walk with a photo-camera (or a phone) and make photos of their pictures.