The order for assembly is "Plunger" inside the "Case" and out through the hole. Hold the semicircular parts of the "Spring" slightly open and insert into the case and over the "Plunger." Place the "Funnel" down over top. Fill the "Head" with candy,messages…and screw into place. 
Sorry I don’t have the photo of the model printed :(

3D PRINTING SETTINGS

To assemble, first place the "Plunger" inside the "Case" and out through the hole. Hold the semicircular parts of the "Spring" slightly open and insert into the case and over the "Plunger." Place the "Funnel" down over top. Fill the "Globe" with candy and screw into place.

Print the spring this as cleanly as possible with 0.8 mm nozzle, no brim, a single wall for the semicircular springs and double wall for the remaining walls. Anything extra will interfere with the functioning of the spring. See picture above.

The remaining parts can be printed as you wish. Minimal infill is required.