The easiest fruit to morph into a pipe is the apple. This sturdy yet soft treat will allow you to carve out a pipe system without much effort. Use an empty pen tube or a small knife to carve out the central stem, but not all the way down. Try not to go over three-quarters of the way through. With this hollowed out, do the same thing but perpendicular to your first carve. These two empty tubes should meet at the end.
This is how most people smoke out of fruit. You can always change things up to make them more pleasant to smoke. If you have a bowl, place it on the top of the apple. Or, you could use the tip of a pen or any other material (that doesn’t melt or release harmful fumes) as a bowl.