Bags, panniers, and baskets click in to the rear rack directly via the MIK System and Racktime system, available at some retail shops, online from shops like Holland Bikes, Amazon, and at some Trek stores. Both feature adapter plates you can attach to your own product to make it MIK or Racktime compatible.
Thule Yepp Maxi child seats attach to the rack’s EasyFit window. We have that information in it’s own section here.
Below is an example of a made for OEM pannier set; the Gazelle rear rack accommodates the MIK System mount without the need for special adapters.
The Amazon link above works in the United States, Canada, and United Kingdom.