Although very dated now, here are a couple of sites I have created over the years. They have mainly been used for testing SEO tactics, experimenting with code/ design/ UX and ultimately having fun without doing damage to the corporate sites I have been working on within my employment!
I have a big passion for audio, so naturally I created a UK audio comparison site. Very old now though!
Sound PlazaThis started off as a very big project (creating a new social media site). However due to time constraints and changes in market trends it has been reduced to a 'micro blog'. It's full of funny stupid things.
Spectrum