Instructions
1) Print out a base
2) Print out the attachment
3) Hang the base over an open door
4) Slip the attachment into the inverted 'V' groove on the long front of the base
5) Put your thing into the attachment
6) Rejoice!
When printing, you probably want to keep the base lying on its side, if your printer can deal with the support. That way you get nice long lines to help support the downward shearing force when it's on the door.
For the attachment, you probably want to print such that the attachment 'shoe' is vertical on your build platform, and not flat against it. Again with the shear lines, you don't want delamination to occur at the juncture where that little rectangle offset is attached to both the shoe and the cylinder.
If modularity isn't your thing, or you've settled on a base/attachment design you like, you can always do a mashup between the two and create a single solid object.




