not sure what type of stuff you like (or if they are boy or girl). a few suggestions is the all famous witch, dress in black or dark purple (dress, pants, tights, etc.) and by a wig or hat. fairy, pink and white and just buy the wings and wand, you can find them pretty cheap. for unisex, a monster, use face paint make the hair crazy and spikey, use old clothes to make them look all torn and creepy. also what i am soing this year is taking my girls to micheal's craft store and letting them pick out what ever accesories they want and dressing them to match, and maybe some face paint. you may want to try looking online for homemade costumes (not really homemade just some pretty neat ideas that dont really take anything to put together.) hope this helps.