Oh you are blessed to have Max, and he to have you, I suspect.
I love those collisions too, and they way they pop up when you least expect.
For example — when I typed collision and sparks into Google, it shows sparklers, electronic lights, bio-luminescence, fireworks, etc.
I wrote an article with 10 more good free photo sites — linked if you want to check it out.
Happy writing — I followed you so I can read along. Tell Max he has a fan out in the middle of the Canadian prairies.