That being said, there are tools that Demonolatry uses that are NOT readily available, or people need to know cheaper options.
For instance, I have a demon companion who loves bones, and also archeological fragments. Bones aren't too hard to get - Amazon has everything, but archaeological fragments, I'd have to dig into black market sources, and first of all, NO, because I respect those ancients more than that, and secondly, even if it wasn't an automatic no, I wouldn't have a clue where to start. So... He gets bones, and not archaeological stuff.
I also make monthly blood offerings to my Patron, and my Mentors (and a Hellborn companion) so I'm going to need to find a good source for sterile lancets at a reasonable price.
My Patron also likes spring water (fresh) or rain water (also fresh). I don't have access to a spring, I do not trust seller's of "spring water" because they often are either stealing the water, damaging the environment to get it, got it through playing dirty with us common folk, and if none of those are true, they're selling tap water.
Rain water I can collect for myself, and store carefully. Sosince I know it's from a trustworthy source, that's what he gets.
So, what tools do you feel you need, what offerings, and where do you find them?
Please, share what you know... And ask what you need to know. Let's help each other.

Anyone know a good source for sterile lancets?
-Raven