A group of teenagers at The COVE (Community Organized with a Vision of Excellence) after-school program started their own businesses projects this year, and showcased the fruits of their labor to family and neighbors earlier this month. The kids, aged 14 to 17, created and marketed their own T-shirt, pastry and entertainment production companies. The groups offered treats for the audience to sample, sold T-shirts they designed themselves and screened videos to the crowd that they created and produced. The COVE is a youth program run by the Knox-Gates Neighborhood Association, on Gates Place in Norwood.