Mark your calendar for Saturday, Jan. 28, the date of the Cardboard Challenge at the New Gloucester Public Library. This creative program, based on recycling, will be held from 10 a.m. to noon. All ages are welcome to come play, and they are welcome to bring in their own recycling materials to use for their building project. There’s no need to sign up in advance, just show up and have a great time. For more information, call 926-4840. The library is located at 379 Intervale Road.