I had this box. I loved those knex. I remember making stuff like the (functional) ferris wheel and playing with my action figures on it. And modifying everything. It was great - like Lego, but a new dimension of it.
Also, if you think stepping on Lego hurts, try stepping on one of thise knex snowflake joints.
I had more Lego but I had a kenx big ball factory. I still think if they made cooler action figures and panel pieces they could have sold as well as lego
Yellow and Black, never knew Orange was a thing. I'd sometimes wake up early and make one of the most ridiculously complex models they had in the book. Think it was either a UFO or a space shuttle looking thing with a rover inside it and another spaceship on the top, pretty fucking pimp to be honest with you.