Two chances this Saturday night to have nostalgic fun while helping local nonprofits:

FAMILY PROMISE OF SEATTLE: As FP gets back into the business of helping homeless families, they need to raise money to be sustainable, so they’ll never have to go on hiatus again – we reported about the heartbreaking stories of their phone ringing, with nothing they could do to help the families seeking somewhere to stay, together. Saturday night 5-10 pm at the Holy Rosary gym, it’s ’50s-’60s music for a sock hop dance, dinner and auction to benefit Family Promise (which is West Seattle-based) – libby@carrbiz.com or 937-2703 for tickets, $25/person, $40/couple.

ARTSWEST: Go even further back in time, to the ’40s, for the “Come Fly With Us” gala Saturday night at the Museum of Flight, ArtsWest’s biggest annual benefit. The auction catalog is online now (find it as a PDF here); tickets are available online too.