I would like to have pictures displayed with kits, and not only text. Would be better to have the same setup as items to be fair.

In reward_data you want to edit this line ("iconName":) and have it point to the site where your picture is located.

e.g. "iconName": "https://i.postimg.cc/TYgmpc4P/Rust-Rust-Kit-Icon.png",

Still doesnt show the picture for the kit