Havent found any either, but i did start finding Dragonscale armor parts around level 48. Never found the armor itself, though

? I was level 3 when I started seeing dragon armor stuff. It doesn't take a lot. The hardest thing to find is dragon scales and bones but that isn't even hard to find, kill a dragon.
OP I'm level 67 and I've only found two deadric items. A bow at the fletcher in solitude, I was level 48. A sword in a chest somewhere level 64. Deadric arrows are also at the fletcher's, I've been buying them since level 20 something, only like 1-5 at a time but once I hit level 60 I find that he sells close to 50 everytime. Also those big drawven robot things always have about 10 deadric arrows and you can get around 20 from Faendal's house in Riverwood.
If you have a conjuration skill of 90 you can get a quest from the college that gives you something that you can use to make deadric armor and weapons. You need a black soul gem, a piece of ebony armor or a ebony weapon of whatever it is you want to make and a centurion dynamo core and then you can make anything deadric.