Sometimes children get very enthusiastic about the most simple things. For example, empty carton boxes.
I had to move few empty boxes to our storage room. In the process of getting them on the grass and unfolded, Paul and Anna had a lot of fun. Piling them up, climbing on them, or scrawling inside, everything was amusing.
So, if you get few boxes, give them a chance instead of throwing them to the garbage and let your children play with them!