I get a lot of requests for half ice drills because so many teams are sharing ice to save money. My team practices once each week on shared ice so I thought I would post one of my practice plans for a half ice practice so you can see the type of drills I run with my team. Keep in mind I coach a Tier I Midget 16 team so my needs may be different from yours. I am a huge fan of small area games and I allocate around fifteen minutes of every practice to running different small area games. I start all my practice sessions with five minutes of informal skating and stick handling then I go into a drill to warm-up the goaltenders. Take a look at the plan, maybe it will give you a few ideas to help with your half ice sessions.
Update: I will add additional half ice practice plans to the Half-Ice Drill section of the site as the season goes along.