One of my co-workers used this as one of her writing activities and I just loved it! It is simply black construction paper and colorful chalk.
It is so fun because the letters really pop on the black paper and it will spice up your little one’s color / writing time.
I model the way to do it first : making the letters, writing neatly and carefully so chalk doesn’t smear, and switching colors to make the art more vibrant.
Then, I leave the example on display while my little one has a chance to practice whatever skills he/she is learning at the time.
Here is one example of the rebus sentence one of my Kindergarteners created with the words he knew: