They needn’t be. The student needs to identify something to help the reader get to know them. A Yale admittee by me wrote about the excitement and exhilaration of waiting for Papa John’s pizza. Another student I know at a top school wrote about their fascination of the fuzz on a tennis ball. Mine wrote about tea as a bridge to her interest of learning about cultures.
Most likely aren’t great but it doesn’t have to be average because you don’t have a mind blowing story. I’d take the time to craft the best essay you can vs just going in non-chalantly…especially given the likely competitiveness to be faced.