You can buy a stick blender at Walmart for $20 and used crock pot at a thrift store for $5 or less. I've seen lots of crock pots at thrift stores, but personally haven't seen a stick blender there. Someone did give me a thrift store stick blender with the plastic end and it has worked fine (no melting it).
I asked this question about the crock pot because I'm new at soaping and made a batch of castile soap in my nice crock pot, because numerous people said it was ok because it's cooked. Then after I made it, I saw on soap forum that some people do not use the same crock. I panicked, because I love my crock and didn't want to buy another for food and be stuck with the one I love for soap. I will purchase a used one from a thrift store the next time I'm out for future HP soap if I choose to do it again. My husband assured me that there is no way that there is active lye in my ceramic sealed crock pot and told me not to freak out. That's a relief, because he knows about these things and would be sure to let me know if I messed up (in a nice way).