The ornamental design for a holidaydisplay, as shown and described.
FIG. 1 is a perspective view of a holiday display showing my new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a side elevational view thereof.
FIG. 5 is an opposing side elevational view thereof of; and,
FIG. 6 is a top plan view thereof.
The broken line showing of a sign, posts, roof top circles, and rectangular bridge supports are included for the purpose of illustrating only and forms no part of the claimed design.