With 2 1/2-inch scalloped round cookie cutter, cut 24 rounds from cheese slices. With 1 3/4-inch round cutter, cut 24 rounds of ham (4 rounds can be cut from each ham slice).
Spoon about 1/2 teaspoon spreadable cheese on center of each bread slice. Place 1 cheese slice on spreadable cheese on each bread slice; press down gently. Place 1 ham slice on each cheese slice.
With 1 3/4-inch round cutter, cut small half-circle from top edge through ham, cheese and bread to form neck of bib (see photo). Repeat to make remaining bibs.
To make tie for each bib, cut each chive in half. Tie 2 chive halves together with knot in center to make X shape (see diagram). Tuck 2 chive ends under cheese slice on either side of cutout. Pipe spreadable cheese to form small design on bibs; garnish with dill weed.