Reddit reviews Reusable Bags Set of 5, Grocery Tote Foldable into Attached Pouch, Ripstop Polyester Reusable Shopping Bags, Washable, Durable and Lightweight (Black,Marrs Green,Maroon,Green,Gray)

First thing that came to mind was the MiiR water bottle - Each purchase comes with a tracking number (printed on a small silver medallion) so you can see how your contribution is helping fund a charitable project. I think mine helped fund a clean water facility in Africa.

I also like shopping at Ten Thousand Villages and related fair trade stores. At least when I purchase in-store, they usually give me a printout that details the origin of the product I bought.

There are also lots of ways for individuals to help the environment.

• Compost bin
  
• Energy efficient lights (I was going to link a lightbulb, but that's kind of a weird gift.)
  
• Reusable shopping bags (some come in very cute designs)
  

I picked up a set of 5 reusable bags off Amazon that fold up pretty small so you can keep one or two in your backpack at all times. It was maybe $10 or so.

https://smile.amazon.com/dp/B06XG4HC3T

They make really light reusable bags that can be folded to fit in your pocket, like these.