I bought mini-funnels from The Container Store. They look just like the Micro Mark funnels, but I don't know if you have a Container Store near you. Craft stores may or may not have them. Check the sand art section and cake decorating/candy sections, too.
Make sure you get funnels made from Polyethylene or Polypropylene. They resist solvents, which is what I use them for.
If you can't find any funnels, you can also use eye droppers (aka pipettes) to transfer thinners and such. I prefer the glass ones over the plastic ones because they are easier to clean. You can find them in the chemistry section of a toy/hobby store.
As for graduated jar, I use the Tamiya jars linked to above. My local hobby shop carries them.
Chris