Create an Anti-Anxiety Kit for Children - includes free printable relaxation prompt cards. not exactly a learning game but a great idea and activity; can make it with the child and discuss the anti-anxiety strategies.
Make Chick fil A Sauce at Home! You already have everything in your pantry right now - takes under 1 minutes to make - super easy to store too! Copy Cat Recipe – Chick fil A Sauce Recipe(Mix Chicks Bbq Sauces)
Magic Milk Paint idea from Modern Parents Messy Kids. This is another one of those awesome 'science meets art' activities for children, and you only need milk, dishwash and food colouring to do it. Looks fun :)