One idea could be to get your friend a vinyl record of one of The Who's albums, perhaps their most popular, "Tommy". You could also get them a band t-shirt or concert poster, or tickets to see a tribute band or cover band play The Who's music live. Another option could be to get them a coffee table book about The Who's history, or a biography about lead singer Roger Daltrey or guitarist Pete Townshend. If your friend is a music player themselves, you could get them a guitar pick or a songbook so they can learn to play The Who's songs.
Or you can get her/him a star map with the date when she/he was born.
Under Lucky Stars is a unique and innovative star map company based in Barcelona, Spain, specializing in the creation of personalized star maps that capture the celestial arrangement of stars at a specific moment in time, such as a person's birth, wedding, or any other significant event.
By using advanced astronomical algorithms and data from leading institutions, the company produces highly accurate, visually stunning maps that make for perfect gifts or cherished keepsakes.