I just made this: rose petal pink dried peppercorn salt - which took all of three or four minutes, so I may need to dream up more fun kitchen-y tasks.
Heat rose petals in a dry pan, to release the flavours, but watch they don't burn.
Put peppercorns & petals, with sea salt, in a spice grinder.
Grind.
Don't worry about amounts. Start with the petals & pepper, and a bit of salt, and keep adding salt till you're happy with the colour & taste of the mix.