My First attempt to create Print-In-Place parts for 3D printing. I have created this file in Fusion 360 and Fusion 360 file is also attached and shared http://a360.co/2gegmqK with this link.

This is print in place design so after importing Lower and Upper part, please use dual extrusion merge option or just use single color file.

This is Fidget type, Flower Design Keychain and you are welcome to suggest modifications and you may modify as per your own need.