Offer something that's uniquely yours, for example, maybe you can draw cute characters. Create one as your 'muse' or 'alter-ego' and do your blogs in picture form (as in instead of typing, write it by hand on your computer in programs such as paint) and then have them interrupt your blogs, or make funny comments about them, etc.
It's very hard to make a 'stand out' blog, because as you have pointed out there are 'millions of others'. Try looking around at your favourite blogs and listing what makes them stand out to you. A blog that stands out to you, may not be the same thing that stands out to me.
thank you :D