The ornamental design for a bubblegummachinelamp, as shown and described.
FIG. 1 is a front view of a bubble gum machine lamp, showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is an enlarged top plan view thereof;
FIG. 6 is an enlarged bottom plan view thereof; and,
FIG. 7 is a fragmentary enlarged front elevational view thereof, showing the faceplate portion thereof with the remaining parts omitted for clarity of illustration.