If you’ve gone through all of your favourite jigsaws, why not try going digital? There’s lots of resources online where you can find digital jigsaws, one example is Jigidi.com. The site organises their jigsaws by subject and size, helping you to select the right one for you.
This idea was originally seen in this alzheimer’s society blog.
How can I help someone to do this?
If you know a keen puzzler, or someone who might like to try an online puzzle, you could forward them the link and help them get started.