To make a nut into a pendant, you only need to carefully dig holes on the surface of the nut and then install a "small door" and you're done!
The shape of a heart, or an oval or square "little door", its all up to you!
The inner space of the nuts can also be used for storage.
Put spices inside, install the chain, and you can DIY your own spices.
For those who are interested, prepare nuts and some simple materials and tools, and try it yourself~