Here are good, more-or-less timeless, costume ideas that can be made with varying degrees of DIY-ness; some (all?) are unisex/can be for either gender - not trying to make anybody obey gender stereotypes, the costumes are just divided for the sake of organization. ~ Enjoy!
1. Snow White - Youtube video on how to create the majority of the costume here. Tutorial is detailed enough, provided you have basic sewing skills.
3. Cupcake - Cupcake photo and very brief instructions here.
4. Greek Goddess - Easy-to-follow Youtube tutorial here.
5. Pinata - Simple directions with pretty pictures here.
7. Scarecrow - Photos are here along with instructions.
1. Bob Ross and Happy Little Tree - Above photo and instructions here.
2. Pantone Color Combo - idea, above photo, and instructions all here.
3. June and Johnny Cash - Above photo here.
5. Sheldon and Amy - Above photo is here.