Question if smth exists+free idea to make if it doesnt bc im not talented enough to make it

I had a high thought last night, are there phone cases that could double as a weed pipe, and if there arent, someone who is actually talented should make some and sell them, it would be really cool to have one, now i wouldnt have it on my phone in public bc there is stoner etiquette, but on private property it would be sick to have that, and ive seen cases doubling as rolling trays and grinders so couldnt see it being impossible im just not talented