Whether you're running a full blown Sense 3.0-flavored custom ROM or just using a basic Sense 3.0 lock screen on your rooted HTC EVO 4G, redtechjunky has a bunch of custom lock screen rings available for your flashing pleasure.
The dev started out with simple colored rings and rings with Lloyd (referred to as "Android punk"), sports team logos, and superheroes in them, but is now actively taking requests that he then puts out for everyone unless they include personal/private photos. Some of these even include images without rings (e.g., the hat you see above).
The lock screen rings were originally developed for use on the HTC Thunderbolt and may not work on all EVO setups, but they have been confirmed to work on the latest eVoKINGS Alliance ROM HybriD (Sense 2.1 with 3.0 elements).
Grab whichever one you want from the link below and let us know which ROM you've got it working on.
[xda-developers] Thanks, ryan!