Tore my Achilles tendon - exercise ideas?

 I was on vacation and tore my Achilles tendon. The Urgent Care doc put me in a walking brace, but limited walking for 6 weeks. Due to the brace, I can't ride my bike.....so, exercise ideas?

I see my doc when I get home, but grrrrrrr, I need to keep moving!

Ideas?

Bummer, but how long is vacation until you can see your own doc? Perhaps, you need to listen to your body and relax a bit?

There's still leg raises (and the brace adds weight), use of dumb bells. Perhaps this is the time to focus on upper body and abs??

Some gyms have upper arm bicycles...