"My business just doesn't have anything interesting to tell"
It is the sentence that comes up most when a shop considers its first collaboration. And it comes from an understandable place: when you have done the same thing every day for years, it stops feeling interesting.
The trouble is that what feels routine to you is exactly what feels new to somebody else.
What you tend to overlook
The process. How the thing you sell gets made, how long it takes, which part is done by hand. You have seen it a thousand times; almost nobody else has seen it once.
How you decide what to buy. Why you pick that supplier over the cheap one, what you reject and why. There is more material there than it seems, and it explains your prices without you having to defend them.
The repeated questions. If ten customers a month ask you the same thing, that is content being requested out loud. Nobody can explain it better than you.
The mistakes. What you no longer do because it went wrong, the season you ordered badly. Telling that builds more trust than any amount of "we are the best".
What you do not need
You do not need a pretty shop, a photogenic product or a story of triumph over adversity. An accountant, a hardware shop or a garage has exactly the same material as a bakery: somebody who knows something the rest of us do not.
The practical bit
Before a collaboration, write down five things you know that a new customer would not. Do not overthink it or try to make them sound good. That list, exactly as it is, is more useful to whoever creates the content than any brand summary.