穸

Mnemonic symbol: this character looks a bit like a bat, and bats come out of their caves at dusk. I could see the upper left 丿 as part of the bat's right wing, ㇇ as the body/head and 丶 as the eye of the bat.

Xi Shi (xi) goes out for a space walk in front of the space station (Ø1) in the evening (夕), where she observes a space bat.

穴 = 八 + 宀 : Xu Xian presents his newest piece of art: Cave paintings painted on a gigantic eight-ball. Somehow he managed to set it up inside the elevators entrance. For his great artistic achievement, he gained a honorary doctor, and proudly wears his hard earned graduation cap.