Spotify - One of the most popular features of Spotify users is surely the Discover Weekly Playlist as it provides useful suggestions on tracks to follow. Only this function has a very small flaw: every Monday, when the new one arrives, the old one is lost. However there is a system to save and store the Discover Weekly Playlist so you do not miss one: all about IFTTT, site that hosts several very useful applets (small program run within a larger program to play a certain function).
The first thing you need to do is register an account on IFTTT. Then you have to go to the Spotify applet. At this point you need to give the applet permission to access the account of Spotify: thanks to this move will automatically generate a playlist that will contain all the Discover Weekly Playlist of Spotify. Easy, no?