My husband made this for me as a surprise. It's a canvas of our baby's actual heartbeat the first time we heard it. Here is how he did it: I uploaded the recording of the heartbeat to a website called soundviz, and on there once you can make your picture of the sound wave and they will sell it to you for $30 (as a PDF). Then I had the image made into a canvas from a different website, I think there's a bunch of places to do that (places like shutterfly possibly). Hope that is helpful!
This is a holiday staple in my family, if it's not made everyone is looking at me. What I do: I cut the croissant three times to create slimmer (and waaay less bread) around the smokie sausages. Roll them up and cook the way croissant package describes. Easiest way to slice the croissant: Pizza cutter! :)