Drills for my backyard rink?

hey, i have a 40 by 80 rink in my backyard. no paint at all, and about 4 inch boards, and big golf nets behind the hockey nets to stop pucks from flying out. im 14 years old. im a goalie for one bantam team, and a skater for a different bantam team. playing goalie is my priority. but what are some drills i can do on a rink like mine to improve? (skating out OR playing goalie) any drills and information is helpful. and i have 14 brothers and sisters, and 9 of them are older than me and play hockey, so i definitely have enough shooters for goalie and extra people in case i need it. even drills without pucks (for goalie or skate) are helpful. any drills at all.