Before every trip I stop by a convenient store we have here in Ohio called UDF. They have good mustard, Mayo and onions in little pouches. My local Krogers also has a rack or good peppercorn ranch, avocado mayo, Gulden mustard, etc. Buy and sandwich and grab a bunch of condiment packs. Oh yea, in Ohio we have Skyline Chili and get a bunch of their hot sauce packs ;^)