Great invention ideas are not something that only scientists and artists can make. One just needs to nurture and hone their creativity to be able to come up with great invention ideas. The four guidelines above below are not hard and fast rules, creativity can be fostered in many ways. All it takes is a great deal of experience, patience and persistence.
To quote Jim Jarmuch, Nothing is original. Steal from anywhere that resonates with inspiration or fuels your imagination. Devour old films, new films, music, books, paintings, photographs, poems, dreams, random conversations, architecture, bridges, street signs, trees, clouds, bodies of water, light and shadows. Select only things to steal from that speak directly to your soul. If you do this, your work (and theft) will be authentic. Authenticity is invaluable; originality is non-existent. And dont bother concealing your thievery – celebrate it if you feel like it. In any case, always remember what Jean-Luc Godard said: Its not where you take things from – its where you take them to.
So have a go at it and be your own artist, come up with your own great invention.