How to make a computer mic

This past weekend Todd and I had fun recording ourselves singing children's songs on the old laptop, which featured a prominent hole on the side where the microphone was. Todd observed this and made sure to point his mouth in that direction when we sang.

Then today as we drove home from school, we sang "Itsy Bitsy Spider" together. As soon as we finished, Todd remarked: "We haven't recroded Itsy Bitsy Spider on the computer!"

I told him we could do so the next time we were in Santa Barbara.

"But Oma and Opa have a computer in their house!"

True, I said. But it had no microphone, and so there was no way to put the sound in it.

After some deliberation, Todd came upon a solution: "We can put a hole in the computer! Then we can put the sound in it!"