Scavenger hunt is one of the most exciting games for children, which seniors can also take part in and have fun. There are many ways to plot the game and tailor it to fit your space. Make clues and hide them in different places of the house, it may be rhymes or riddles leading to a small price such as a book or candy. Seniors can make a list of things they want their grandchildren to find in the house or in the yard and hand them a bag with the list to find those things.
Photo scavenger hunt is also an amazing alternative. Grandparents can say any word and have their grandchildren use a camera or smartphone to take picture of items that start with every alphabet of the given word.