Two things I’m stuck on at the moment.
Here you have Spline Path inside the Custom event. I can get the speed and offset, but I dont know how you got the spline path in there. What type of variable is it?
Later in the BP_SplinePath you have the variable type BP Objects with a purple grid. I can’t seem to find this one either 
Sorry for the beginner questions, and again, thanks for the help, it’s greatly appreciated.
EDIT: Also, does your BP_Object contain all the geometry of the BP_Object_Cube, BP_Object_Sphere etc?
EDIT2: Ok, got the BP Objects variable to work but I dont have any default Value, im guessing this is because I built the actors wrong? I created a single Actor, named it BP_Gift (instead of BP_Object) and then right clicked and “Create Child Blueprint Class” and added my mesh to the child. This though makes it so the original BP_Gift is empty, but your example has mesh in it.
