Polygraph have used Spotify to measure the popularity of older music, specifically tracks from the 90's. By analysing the data interesting trends are visable, popularity at the time doesn't always translate into longevity. For example the top track is Nirvana's 'Smells like teen spirit' which didn't get into the top 5 when first released. It's worth noting that Spotify doesnt have every artist, and the user base of the app skews young. Check out the Polygraph website for more Spotify data mining.
Mapiful lets you create custom maps of the places you love. By using openmaps data you can zoom and pan a map to get the exact spot you want turned into a large print. With a minimal black & white colour palette and nice clean type the maps have a great aesthetic. Create your own map on mapiful.com