AD VICTORIAM, SNUGLY
Most new Brotherhood Initiates join up because they're looking forward to receiving their own set of Brotherhood power armor someday. And sure, a set of T-60b power armor is a nice perk, but there's no good way to curl up on a couch in your power armor while you listen to your favorite holotape recording. Most post-war couches couldn't even handle the weight.
This Brotherhood of Steel fleece blanket, though? Much better for relaxing in during your downtime, between eliminating super mutants and finding technological blueprints for the Brotherhood. It's soft, warm, and is inscribed (you see what we did there?) with your favorite pseudo-religious military organization's symbol. Ad victoriam, soldier! After a nice nap