Google’s recommendations sent me this Brickset article about Brian Stickley’s Base Ace building system. He developed the system to help keep his son’s creations in tact during play. While I tend not to mix brands of building toys in my own creations, I have to admit that Base Ace looks like a lot of fun to work with. EDIT: Removed the Brickset link because of a pop up pretending to be my ISP. Base Ace has a facebook page here if you want to see the system.