Flapper costumes are an easy, fun Halloween option if you don't have a lot of time and cash. Just create a Louise Brooks-inspired lined eye with a waterproof black cream liner like Boots Botanics Cream Eye Liner ($8). Then, get silent film star lips with a deep red like Topshop Lips in Hazard ($16). Wave your hair and pin it into a bob, or grab an inexpensive flapper wig ($7). Finally, throw on your glitziest 1920s-inspired hair accessory, like this Juicy Couture headband ($65).