Warning - This design is wildly experimental !
Being lazy, I got tired of chasing fan shroud clips across the room. So here's an experimental "clipless" fan shroud.
Initially I was worried about blocking the vents at the top of the heatsink. But with the original fan shroud the heatsink warms to 38.5 ℃ if the hot-end is set to 235 ℃. With this one it only goes to 40.5 ℃, so I don't think that's a worry.
I left the clip anchors on for the faint of heart. The horizontal plane near the botom is a shutter for blocking part cooling while printing PETG. (Pulled halfway out for the photo).