Twenty Questions
One of you thinks of something. The other has twenty yes-or-no questions.
Ten objects on a tray, thirty seconds to look, then one disappears.
A classic for a reason. Needs only what is already on your shelves and works for a huge age range.
Holding ten items in mind and noticing an absence is genuinely demanding working memory practice. Children who struggle with it usually improve quickly once they start grouping objects rather than memorising them one by one, and that strategy is worth pointing out.
No small objects if there are under-threes nearby.
Objects go back where they came from as the last round.
One of you thinks of something. The other has twenty yes-or-no questions.
Close your eyes. What made that noise?
Reach in, feel one object, and describe it without naming it.
A real job, done properly, by someone who is four.
Darks here, lights there, and a two year old who takes it very seriously.
A cupboard of containers and lids that do not match. Sort it out.