Let's put this on a billboard in front of the Brazilian tourism board HQ.

nostr:nevent1qqstf2rl8eyy28z3pxqr7y55tuyr0q0r0sjh9w0w9m0uahqgw7we9hgpzemhxue69uhkummnw3ezuerpw3sju6rpw4ej7q3qnjst6azswskk5gp3ns8r6nr8nj0qg65acu8gaa2u9yz7yszjxs9sxpqqqqqqzwcuqhj

No, but seriously I think there could be fairly cheap, effective marketing campaigns. Sponsorship of small cultural events and video channels already aligned with nostr and have presence here. Eg. Meshtastic community and permaculture spring to mind. These 'niche' interests which actually do pretty big viewership numbers. Maybe a sponsored segment on Jay Dyer's youribe, he already seems to get t-shirts from lightningstore thing lol