I quickly realized after my first bike ride over christmas that I really need to build up my legs/glutes for riding. Upping the level on my indoor recumbent bike has helped a lot (I've increased it to a level where I can barely do 15 minutes, and when I can do that without internal whining, I increase it a step), but I feel that I need to do more. (It hasn't been quite warm enough to do more than a handful of bike rides, so I'm only up to being able to do half an hour. Obviously I want to do a lot more than that).

Does anyone have any favorite leg/glute exercises that can be done at home? I have stairs that I can use safely, so I've already decided that standing calf raises would be a good idea. What else would be good? Squats???