This is a two-page handout that I use after I've taught the passé composé with avoir. My students keep this in their notebook as a reference and refer back to it often.
Page 1 features how to form the passé composé with regular verbs and has a part at the bottom where students identify the verbe auxiliaire and the participe passé. It also explains where to put the ne...pas.
Page 2 features the irregular past participles for 30 verbs. It also features some example sentences using these verbs.