I just bought these Compression Socks and LOVE THEM! The socks have gradual compression to support the arch. They are a thin nylon so I can still wear socks over them if needed to cover my toes.
My plantar fasciitis was so bad that my heal and arch would suddenly be in pain even sitting on the couch watching TV. To alleviate the pain I would have to sit up and massage the foot or start rolling it on a rolling pin. This is the first time I can remember in months where I could watch an entire TV show without thinking about my feet.
I also wasn't able to walk around the house barefoot, and I always needed to wear shoes with my orthodics. Now I can wear these socks without shoes. And best yet, I can now wear my flip flops around the house in the summer! I haven't been able to wear flip flops in quite some time because I always needed to wear shoes with the orthodics.
I realize they are expensive, and I hesitated for a few months to buy them. I got to a point where I would pay anything to relieve the pain. And these socks are worth every penny. I'll probably buy another pair so I can have a spare while the other pair is in the wash.
They come in different sizes, so you have to figure out what size works for you. It was easy for me - I have tiny feet (size 4 US, 34 Eu) - so I went with a small, and they fit perfectly.
P.S. It's also the first time I can remember in a long time that my first steps out of bed were "normal" and I didn't have to hobble and limp until my feet loosened up. :D