I asked around again and these are your suggestions: :)

Annette:
throw over, roll over, you could also bowl with these balls, a kind of jeu de boules with the smiley ball as the ball you come closest to in turn. For the football boys keep it up high, throw it in the air yourself and catch it. You could also use them as a stress ball

Linda:
I immediately think of can throwing, a wonderful game that involves various skills!

Femke:
Learning to juggle, translate in the hand, hide and seek, and the list goes on!
You'll definitely have lots of fun playing with these balls!

Lidia:
We could use them at my work as a sensory ball, for concentration. We could also use it in the feel box, how many balls do you feel? We could do counting lessons with it… they could go to the playroom…

Monique:
The only game suggestion that comes to my mind now is the age old game of juggling or throwing the balls 1 by 1 to the feet of a person. He has to make sure that he is not hit by jumping in all directions (sideways-up-backwards-forwards)

Children's practice Bij Kee:
Oh, these are so great for practicing hand motor skills!
Knead it nicely, squeeze it, roll it between the palms of your hands, push your fingers in one by one, take it from each other's hands (like pecking a stone), delicious!
They are also great for can throwing, which I often do with yoga blocks, and for practicing aiming or throwing at something.
Great for anyone who works with movement.

Ine:
I would use them here in therapy to, for example, pick up a ball with your feet while lying on your back and try to put it in the therapist's hoop (who of course tries to do the same with the child's hoop)