At first glance, this isn't a craft. Silly Sentences is actually an educational game available for purchase. The basic idea is to create fun, absurd sentences using puzzle pieces which are separated into nouns, verbs, prepositions, and other parts of speech.
To turn this into an art project, let the kids illustrate these entertaining lines. To make it a writing activity, use the silly sentence to spark a story idea.
Silly Sentences puzzle tiles
Toplay with a few kids, divide the pieces between each person. Take turns playing a fitting piece until the sentence is completed.
To play as a group, keep all of the pieces in one pile and let each person choose a piece that will fit.