I've managed to get to 35 weeks without ANY maternity clothes. Like you I thought they were all hideous or unimaginative. I've just been wearing long tops or tunics with either leggings (the brighter the better!) and boots or any pants/skirts with a low waist - luckily I happened to have a few of those already. Being in chilly Melbourne having a nice long black wrap-cardigan to go over anything has been really useful too.
Good luck with finding those tunics - they sound ace