There's nothing close by in my town that carries anything remotely related to witchcraft. In fact, I've been around asking for pentacle charms and everyone just gives me a dirty look.
So I'm forced to use the Interent for things that are specific to the craft.
However, I do find a lot of things is regular shops. Like candles and incence, and things like that. I also find some really interesting things in these local country hardware stores. I have FOUR stainless still 'singing bowls' now. Of course they are real singing bowls, but they ring out so beautifully! And they were quite inexpensive and pretty. They also make good altar bowls for holding Holy Water, salt, potporri, or as offering bowls.
I've seen some nice cast iron cauldrons too, but they're quite expensive. I want to get a really huge one for the laybrinth garden to place at the south of the circle. I'm looking to get something like a huge cast iron pot that was used at a foundry or something. Sometimes these things can be picked up at a metal scrap yard. I'd like to get something really huge if I can. I'll keep my eyes open this summer. There are actually several scrap yards near where I live. I'm looking for something so large that I'll need to bring it home in a pick up truck.
I'll probably build fires inside it rather than under it, and use it for banishing spells, or just as a crucible to invoke the Fire Gods.