Bay seniors whose grandchildren can’t get enough holiday dazzle, should consider an evening visit to Zoolights, the largest LED light display in the Bay Area. It’s at the Oakland Zoo from 5:30 to 9 pm through Dec.31. Hundreds of thousands of little bulbs glitter on paths, animal structures and night train adventures. It’s a separate admission from the Zoo itself – $6 per child, $8 per adult. Ghiradelli hot chocolate is available to take the chill off.