Losing it?

I haven't been able to attend class for the last 3 weeks or so. How do you keep up or train when you miss chunks of class like this? Standard exercises come to mind (assuming no wooden dummy nor weapons):

• SNT/CK/BT training
• Chain Punching drills
• Footwork drills
• Poon sau/Chi sao in front of mirror
• "shadow boxing" WT style

Is there anything we can do to replicate the energy/benefits from chi-sao training? How do you battle through the long droughts of WT?

Until then.