What about, ...
Arm bands, 'Ducky rings' and fins with go faster stripes!!!
Snorkels and goggles.
Swimming certificates for catching specified amounts of salmon?
i was just saying last night i think it would be really cool to have a skill set that goes with underwater stuff - SCUBA! :)
i've seen other people post about having these worlds be more interactive than just coin grabbing and now that we have the salmen i'm excited to see what comes next.
I love the idea of the certificates for swimming. We could display them in our houses. They could go with the existing badges, like we used to get in school. Badges for our clothes (or our collection) and certificates to go on the walls!