It is a good idea! Thieves, pls don't search my yard for pinecones! Here's a good idea to hide your extra house key - put it in a medicine bottle, glue a pinecone or rock on top, stick the bottle in the yard or planter.
A rope bracelet - reminds me of making friendship bracelets back in the day. My right second toe used to go numb because I'd hook the end of the bracelet over it, and then knot embroidery floss for HOURS.