Definitely stand in your shoes with this....
Some things I do to save money and hide witchcraft from my parents are...
Buy chalices, statues, and candles from goodwill. I've gotten candle holders there, altar cloths, pentacles, wood... So much you could get there.
I use a lot of natural things from my yard as well. I'm blessed with crystals every now and then, but feathers, rocks, pinecones and the like are priceless.
If you need any more tips, or need something specific, message me :)