Answer: petrock

AnswerCrossword Clue
PETROCK'70s craze
PETROCKFaddish '70s toy that came in a box with air holes
PETROCKFaddish '70s stone
PETROCKPopular '70s fad gift
PETROCKErstwhile gag gift
PETROCK1970s fad
PETROCKPopular 70's gift