Homemade video trying to show why it is not a problem that China owns part of the U.S. government’s debt. Scroll 3 minutes into the video and you can see how he used low-tech paper to explain what would happen if we pay down the debt. No fancy graphics needed.
From Numbrary. This site provides simple graphs for many different economic data sets and groups them by subject. The example below should the data for US Debt. Also allows users to upload data.
Good Magazine in collaboration with Nigel Holmes created this historical survey of the US economy. The graph shows the GDP (grey) and the National Debt: real dollars (solid red line) and actual dollars (dotted red line)