I claim the ornamental design for a receptacle for recycled materials, as shown and described.
FIG. 1 is a perspective view of a receptacle for recycled materials, showing my new design;
FIG. 2 is a left side elevational view thereof; the right side elevational view being a mirror image;
FIG. 3 is a front elevational view thereof; the rear elevational view being a mirror image;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom plan view thereof.
The broken lines in FIG. 1 are for illustrating unclaimed portions of the receptacle for recycled materials; the broken lines form no part of the claimed design.