DAy 1 - Sign up!
Keeping it simple.
DAy 2 - Checkout
Sample of a subscription.
Day 3 - Landing Page
I feel like I should write guides on Streaming since I've done so much research...
Day 4 - Calculator
Maybe too simple.
Day 5 - Icon
Day 9 - Music Player
For streaming services such as twitch, it would be nice if there were extensions that allowed users to have more control on wither they want to listen to the music the streamer is listening to. A separate volume slider to start would be great. Ideally this could integrate with media sharing features so users can tune out of shared media, as things can get pretty wild on twitch.tv.