Check out the treatments shown on the reknit spectrum in more detail:
COPY replicate a favoured item
SWISS DARN decorate or reinforce fabric using duplicate stitches
EMBELLISH create integrally joined trim or patch pocket
ADD ELEMENTS sew on knit or crochet motif
STITCH HACK reconfigure stitches to insert structural design
INSERT POCKET create slit and insert hidden pocket
REPLACE CUFF remove existing cuff or hem and replace
ALTER SECTION insert, replace or remove section of garment
REKNIT entirely or partially unravel garment and reuse yarn
REINVENT remove section of garment and use in new way
INSERT PANEL insert vertical panel, gusset or godet to seam or opening
CARDIGANISE cut open garment vertically or diagonally and add trim