The ornamental design for a set of supports for furniture, as shown and described.
FIG. 1 is a perspective view of a set of supports for furniture, showing our new design, the broken lines showing the ottoman are for environmental purposes only and form no part of the claimed design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a perspective view, showing the design in a second environment as a bench; and,
FIG. 8 is a perspective view, showing the design in a third environment as an ottoman.