Yes, this.
Though there's also prevention - if a food tends to be messy, don't eat it in the first place.
I find I pick foods based on ease of eating, and flavor then comes in at some point in time.
For example, only eat messy foods on weekends, when there is appropriate time to clean up adequately, or when being messy matters less.
Inherently crumbly foods are usually off the menu, as crumbs tend to bounce or get blown around with the slightest errant breath, and it can quickly becomes more trouble than it's worth.
Foods that have water-soluble residues are preferred over fatty greases.
If it can be eaten at refrigerator or room temperature, without the need for heating, that's another plus.
But as far as containment goes, you've got lips. Use them.
Close your lips around the food item, then make the cut or break inside your mouth, and don't shuffle your hands all over the thing. Crumb generation is primarily in your mouth, and is therefore contained. (And don't chew with your mouth open. For one, it sounds gross, and also can let crumbs and such spew everywhere.)
But hell, I even select things based on the aftertaste. For example, most things with any significant quantity of garlic are out, as that nasty aftertaste persists for
hours, and no amount of tooth brushing can affect it.
(Hey, it's still physics. With some chemistry, I guess,
which is just applied physics.)
Yes, I'm terribly lazy when it comes to food. If I could have an adapter installed so I could just charge off a 120VAC source, rather than needing to eat, I'd go for it. I also hope no one offers such a thing, because I don't want to find out how much money I'd be willing to pay for it. It would probably be an irrationally substantial amount though.
First add-on accessory: A sine-wave inverter and some solar panels. Second add-on accessory: A USB charging port.