I've really gotten into 3D printing since our family got an awesome Bambu printer last fall.
I find SO many household problems that can be solved, or projects that can be done better, by quickly making little custom parts like these.
What are they? Doesn't matter!* They printed in 5 minutes and helped me with a project. (And I'm still making all of my custom models in TinkerCAD, a web app designed for children, because it's so fast and easy.)
* installing some custom cove lights in my office
And this is what those 3D-printed brackets enabled: finally, some soft, indirect cove lighting in my office.
I adhered two parallel LED strips (Waveform dim-to-warm, of course!) to 20mm-wide aluminum strips.
The rectangle pieces perfectly aligned the aluminum strips during assembly.
The long bracket with the triangles rests in the triangular channel created by the moulding, and props up the LEDs at an ideal angle to bounce off the ceiling without being directly visible to people in the room.
Marco Arment
Adam Mason