Northborough – The YMCA of Central Mass. Boroughs Family Branch, 4 Valente Drive, Westborough, will hold a President’s Day open house Monday, Feb. 20. The event will feature entertainment by Mr. Pumpernickle Puppets, a sing-a-long with Mr. Vick, and exercise demonstrations. Visitors can check out camp specials as well. There will be no joining fee on new memberships during the open house. For more information, contact the welcome center at 508-870-1320 or visit ymcaofcm.org.