L1: Invention or Discovery?
L2: Chronology of Inventions
L3: SCAMPER
L4: One Invention Leads to Another
L5: Unintended Uses / Reuse / Re-purpose / Re-imagine
L6: Why People Invent
L6+: How Things Work
L7: Drawing/Drafting in 3D with Tinkercad.com
L8: Thinking Methods & Engineering
Ideas of Things to Make