Scattergories rhymes with:
allegories, categories, allegories, categories, conservatories, dormitories, interrogatories, laboratories, laboratories', laboratory's, lavatories, observatories, observatory's, reformatories, repositories, signatories, territories, territory's
Scattergories sounds like:
starcross, stargazers, stressors, strieker's, striker's, strikers, strikers', strycharz