The ornamental design for a holder for a burnablesubstrate, as shown and described.
FIG. 1 is a perspective view of a first preferred embodiment of our invention;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a right side elevational view thereof; and,
FIG. 8 is a view thereof that is identical to FIG. 1, except for showing a pivotable mounting prong of the holder moved to an alternative position that renders the holder more suitable for compact shipment.
The dotted line representations of stands in the form of bumps, pivot supports, surface ornamentation in the form of a coil, and a pivotable stand, depict unclaimed environmental subject matter.