^ This. Also, I went down this rabbit hole last year for my kids birthday. Tried a few things but universal registries are the way to go for local shops. Just go with GiftHero or something similar. Most have a browser extension that handles the backend stuff for you automatically. My non-techy parents figured it out fast once they saw the buy button. It basically stops the double-buying issue.

Basically, shared Notes are a disaster waiting to happen because they lack any real-time sync for checking things off. If two relatives open the Note at the same time, youre definitely getting double Legos. For those Chicago local shops, you need a system that scrapes metadata correctly so the grandparents can actually see what theyre looking for without getting lost in a sea of broken URLs. I would suggest checking out this wishlist site since it handles third-party links way better than most apps Ive tested. Just make sure to keep an eye on these specific issues:

• Verify the guest claim functionality. If the UI requires a full account setup for the buyer, your non-techy relatives will likely give up halfway through.
• Be careful with manual entry items. If you add a shop name without a direct URL, people tend to get confused and buy the wrong version.
• Make sure the site supports image caching. If the original shops site goes down or changes the image path, the wishlist might just show a blank box. You might want to consider how the mark as purchased trigger works on the backend too. Some sites have a delay in updating the status across different sessions. If Aunt Sue buys something, it needs to reflect immediately or youre gonna have a mess. Its basically a data consistency problem, honestly... and older relatives usually wont think to refresh their browser tab to check for updates.