Walk-in registration for the Grand Island Little League will be held from 10 a.m. to 2 p.m. Saturday in Grand Island Memorial Library, 1715 Bedell Road.
• The second installment the Rock on the Island Winter Concert Series takes place at 8 p.m. Saturday in Ellden’s at River Oaks Golf Club, 201 Whitehaven Road. Featured will be the ’80s music of Nerds Gone Wild. Tickets are $10.
• Grand Island Cooperative Nursery School, which serves youngsters aged 3 and 4, holds an open house from 6 to 8 p.m. Thursday in 2100 Whitehaven Road. Registration for 2015-16 begins Feb. 1. For information, call 773-3670 or visit www.gicns.com.