Partial answer
I think these words are
actually describing food, or things that could be food.
*rap* + *saint*
TAPAS? (TAP = rap [on a door], not sure about the second half)
double + heir
BISON (BIS = twos, SON as heir) - like bison meat.
percent + fool
BACON (BAC = blood alcohol concentration or percentage of alcohol in the blood, CON = fool [as a verb])
wheel + honey
Don't know
crystal + boy
SALAD (SAL meaning salt crystal, LAD = boy). This is the vegan one.
location + call
Don't know