Hi, @Siphonay
I saw you've created a #pokemon instance. Since there are propably many that like to play #pokemongo, I can highly recomend #streetcomplet
An app that asks you to go around your neighbarhood/city adding missing informations to #openstreetmap.
It's somehow gamified and does a great service in a collective manner of improofing maps of free access.
on #fdroid it's here:
https://f-droid.org/uk/packages/de.westnordost.streetcomplete/