If you likewise believe it is OK to have second hand items... then check out local second hand, "Opportunity" shops, garage sales and things like that.  It is amazing what you can find.  I've picked up an antique "glue pot" which looks exactly like a mini cauldron - for only $5 at an antique store.  I've also got a brass pot plant holder that I use as my main Cauldron (because it is big enough to have a fire in - it's up on little legs and has dragons etched into it).  I have chalices and Censors I have picked up  second hand too.  You could maybe find old brooms suitable for a Besom... numerous things to use as a censor.... goblets... cushions.. let your imagination go.

I have a whole heap of spice racks I bought to put my herbs into....