I've talked about it before but Attention K-Mart Shoppers is such an incredible thing, a collection of overhead department store music from a forgotten era https://archive.org/details/attentionkmartshoppers
My favorite thing is still the opening track from the October 1989 tape. The synths! The distortion! The yearning calls of the instruments! The piano! https://archive.org/details/KmartOctober1989
There are so many good tapes though