You should read this, Charlie

Y. B. Karasik
Thought Guiding Systems Corp.,
Ottawa, Canada.

Two metalic parts need to be held together without clamps, strings, or similar things. How can this be done ?

Use adhesives or magnets. What special tools of creativity should one employ to arrive at such a trivial solution ? But read the article "Creative conceptual design ideas can be gotten with TRIZ methodology" by Gao Changqing, Huang Kezheng, and Zhang Yong. You will learn that without Contradiction Matrix and Invention Machine one would not manage !

This reminded me an old joke: "The communist party teaches that 2 x 2 = 4 !"
Now it got transformed into "TRIZ and IMC teaches that to make two metalic parts to hold together, they have to be magnetized !"