Good plugins for donation benefits?

Hello! Recently me and my friends started up a Rust server, and I am wondering if anyone has any good plugins they would like to share! I need something that players will like, and donators will have access to. I already have a kit plugin, and have it set up to where you can buy special kits. I also have rank systems set up, but I don't have any idea of any good plugins to add to the donators ranks.
Anywho, if you have any good ideas, please mention!
Thanks!