I saw this idea somewhere last week and I had to give it a try. I don't remember what the originator called it, but I call these "Spaghetti Dogs." =D Here's how it works...
First, you stick dry spaghetti noodles into a hot dog, however you'd like:


Then, you boil the spaghetti-speared hot dog pieces:

They sort of "swim" around the pot of boiling water, which is especially fun for the ones that look like little squids. =D
Once you pull them out of the boiling pot, the spaghetti is soft and has swollen to fill the hole it is in, so it doesn't fall out. It's pretty cool!
I really wanted to use this technique to make a head with hair, so that's what I did for this one. She ended up with really long hair, so I thought it would be fun to make a Rapunzel bento, but it didn't really turn out that way. Really, she ended up looking like an evil robot, I think. Oh well. You win some, you lose some.

Still, it was fun to make the Spaghetti Dogs. We'll have to do that again. And I think it would be fun for kids to make their own designs with the spaghetti.