Re: grapefruit or orange bowl.
here is how I would go about it.
Make a nice flat slice in the fruit like 1/4 or 1/2 way down the fruit. Very carefully with a knife core out the desired bowl size. If you are a potato peeler or an apple peeler those work well. Use a peeler/pen/knife to make a hole through the bottom there you will put the fruit on the stem. I like to use toothpicks to make a "screen" to prevent tobacco from falling through. They allow for air to flow nice and freely. Add your tobacco. Cover with foil, use toothpicks or bamboo skewers to keep the foil in place. Poke holes in the foil. If you want to keep it sturdy add some toothpicks as legs so it stands on your tray. Add a lot of coals (3+) and enjoy. Clean up is super easy.... throw it all away.
Km Silk Butterfly, v3 Narb, Vortex bowl, Nak Mizo Mint + Af Orange