The ornamental design for a combinationseat and handcart apparatus, as shown and described.
FIG. 1 is a front elevation view of a combination seat and handcart apparatus showing my new design.
FIG. 2 is a rear elevation view of FIG. 1.
FIG. 3 is a right elevation view of FIG. 1.
FIG. 4 is a left elevation view of FIG. 1.
FIG. 5 is a top plan view of FIG. 1; and,
FIG. 6 is a bottom plan view of FIG. 1.
The broken lines in the figures showing wheels and two coolers are for the purpose of illustrating environment and form no part of the claimed design. The broken lines within the seat pads and bags are for the purpose of illustrating stitching that form part of the claimed design.