I guess you mean stuff already printed like flyers or stickers? Fairphone doesn’t stock a lot of these anymore (except for flyers for the new products – Fairphone 5 and Fairbuds XL). But you might also want to take a look at this.
Basically, Fairphone is willing to reimburse printing costs for Community events within reasonable limits.
There’s an old topic which (its starting post) is now totally outdated, but I’m linking to it here nevertheless because the big 3-metre banner still exists (although I doubt you might find it fitting for your needs right now):
P.S.: The “Community Identity” zip file is no longer available for donwload in the first link above. I’ve emailed it to you @LowMemory at your Grenoble Fairphone Angel address.
P.P.S.: The (right above) attempt to email the zip file to the Angel email address was rejected, too. Sorting out this specific detail in DM with LowMemory now.