**Partial answer**

I think these words are

>! actually describing food, or things that could be food.

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*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