Allow me to expand on what DaveLembke said.
Most people are not going to master tablets and computers. It just does not happen.
Using a photo sharing service might be the best you can do. Here are my thoughts.
1. The Photo Sharing serve is not limited to just one brand or type of computer system.
2. A good service pays more attention to just photo sharing, not games and shaping stuff.
You can search for this topic:
Free Ways to Share Photos With Friends and FamilyBut avoid Facebook, It is overkill.Here are some ideas I like:
https://www.howtogeek.com/133062/the-best-free-ways-to-share-photos-with-friends-and-family-other-than-facebook/https://www.familysearch.org/blog/en/turn-photo-collection-chaos-order-simple-tips/You may re think the use of paper and cardboard boxes:
https://www.lilblueboo.com/2012/12/tips-for-creating-simple-and-timeless-photo-albums.htmlOf course, there are lots of firms that will sell you something. Avoid them. Instead, get you grand kids involved in helping your do some kind of private internetphoto sharing plan.
Ask you kids about their sill with any of these:
Flickr
500 Pixels
Photobucket
Canon Irista
DropBox
I hope this is of some help. Soon there ill be some new gadgets on the market designed specific ally for Internment family photo sharing. But let you kids discover which are worthwhile. Meantime, use a free photo sharing Internet service.
EDIT: Hardware? This answer is not just hardware. Some new TV sets are coming with the kind of things you may want for family photos. But let your kids discover what is best. Meanwhile, plan of using a internet photo sharing service. They work with any kind of PC, tablet or smartphone.