As you know Amazon has ideas lists (interesting finds) - lists of items, saved and sorted by purchasers. These lists never contains thrash and the most popular lists contain the really popular goods, so it's good source to find the products for recommendations. Homepage of these lists is:

https://www.amazon.com/stream/explore-idealists-by-tag

By the way, you can create and edit your own lists, just open the following page (be sure that you are logged in to Amazon)

https://www.amazon.com/stream/saves/

and click the "YOUR IDEA LISTS" link.

Amazon shows lists randomly, without any sorting and filtering, so you cannot know what lists or lists owners are popular to understand the trends, choose the most interesting goods and so on. Fortunately, the following website knows and shows complete data. It can show list authors and lists sorted by hearts and goods sorted by customers reviews (only goods included into ideas lists are shown). Find lists and goods interested for you and for your partners:

HEART-FILLED GOODS