What's your favorite type of censors?
Unnatural beams of light? Or objects?
So unnatural beams of light.
I'm surprised no hentai is doing this, since it looks way better than your standard mosaic.
Other naked girls. That said, not drawing the critical parts is a well-tested method of getting past the editors radars. Ritz has done it on multiple occasions, but then again she's unstoppable now.
The "no looksies" scene from SKET Dance was rather humorous.
Steam/fog that is typically used for shower/hot spring scenes
The ecchiest ecchi I know with god tier censorship
Also its actually a decent ecchi comedy anime.
One might even say
finger licking good
Hyakka Ryouran: Samurai Girls had interesting censorship with the ink blots.