So I went looking for cheap, DIY, crazy Halloween costume ideas and this is what I found.
The instructions to this crazy piece can be found at
I've never been quite this lazy with my costumes, but this might actually be a good idea. Thank you Martha Steward, sometimes even your crafts might be affordable and achievable.

This skirt will also work great for fairy and belly-dance costumes!
Another quirky hat, this time from the amazing Threadbanger episodes. I am definitely trying this one out sometime... I've got tons of random decorations that need some use!
This website has some pictures for some beautiful tiaras! If you want to be a fancy princess or fairy for Halloween this is where its at.

There will be much more costume links and ideas coming your way soon. If you want to be a fairy... check out the fairy post!!
I know some of you like to buy your costumes, while others like to make them. Here are some ideas for great fairy costumes. Having done a lot of research and projects in the field, I can sincerely recommend the following instructions:

Simple Black- From Threadbanger

Best I've Seen by Emilie Autumn

These are more simple, but are also very sturdy and pretty.Fancy Fairy The strap and wing attachment is very clever and I prefer this one because you can tie it under your costume for that "invisible" look. Plus it doesn't chafe. 
Have fun with the costumes. I'll be back with some more fun ideas for Renaissance and Halloween costumes later. Thanks.