How do I create one wishlist using items from different websites?

I totally agree with avoiding the Amazon tool... it is a buggy mess for years. I went through this exact same headache for my sisters housewarming and ended up switching to Share Product. Honestly, I am so satisfied with how it works across different stores. It is a free extension that makes sharing product links super simple and actually tracks what has been bought. I used it for my own 30th too and had zero complaints. It handled my obscure gardening sites and REI stuff perfectly. Plus, my grandma used it on her iPad without calling me once for tech support, which is the real victory. TL;DR: Share Product is the way to go for a clean, syncable list that works on all devices and handles international shops without the glitches.

Regarding what #1 said about "I totally agree with avoiding the Amazon tool..." - honestly, it is pretty disappointing how poorly most of these universal tools handle complex metadata. I tried setting up a master list for our wedding last year using a bunch of the big name sites like MyRegistry and GiftHero, but they were honestly a nightmare from a technical standpoint. Most of them rely on scraping Open Graph tags or JSON-LD data from the product page. If a site like that UK boutique you mentioned has a non-standard header or uses a heavy JavaScript framework without proper server-side rendering, the wishlist tool just chokes. It either misses the price or pulls the wrong image entirely. I spent hours debugging why a specific piece of gear wouldnt load properly on my list just because the store used a weird lazy-loading script. Its super frustrating when you just want a clean data sync that doesnt break every time a shop updates their CSS. I also found that a lot of these platforms have terrible mobile responsiveness. If your grandma is on an iPad, she is gonna have a rough time with overlapping divs and broken touch targets. I ended up ditching the legacy apps because they were too bloated with trackers and ads. Actually, I just use Share Product for this—its way easier than having ten different tabs open for every store.

Honestly, i went through this exact same stress for my own 30th last year. I was so sick of having 50 tabs open and trying to explain to my parents why they couldnt just see the list on their phones. I finally landed on a setup that works well for mobile users, especially for the older folks in my family who arent super tech savvy. Im really happy with how it manages everything in one place without crashing or losing my items. One practical tip i learned: make sure you check if the tool you pick lets you add custom notes. I found that super helpful for my hiking gear so people knew exactly which size or color I needed. Cost-wise, I wouldnt pay for any of these services because there are plenty of free ways to do it. I personally found the walmart wishlist maker really straightforward for the basic stuff, and it kept things clean. Just stay organized and itll all work out, trust me!