Need help designing an interlock between two 3D printed components

[JeffZ]

Hello, I’m designing an angled desktop picture frame which will contain a lightweight LED screen:

screen_stand1.JPG
My question is, how to create a clean interlock between the base and the frame?

screen_stand1b.JPG

A few more details:

• The screen won’t be interacted with touch wise or anything, it’s just a free-standing display
• I would like the design to be as clean and minimal as possible without any need for supporting brackets in the back. The interlock should be able to easily support the cantilever force.
• The interlock doesn’t have to be designed for rapid assembly and disassembly
• I’m flexible on what program to design in (I’m using tinkercad at the moment)
• I don’t own a 3D printer, preferring to print at 3DHubs or other using a fairly inexpensive material such as Standard ABS (FDM)

I have read the guide here: How to design Snap-fit Joints for 3D Printing and have some ideas of my own, but this will be my first experience designing a snap-fit joint so I thought I’d reach out to see what ideas you have.

Thanks!