Here's the things on my core workout that don't involve any stomach crunching. Ignore the "hold 4 sec" and "repeat x4", just work up to that. It took me a LONG time to work up to 30 sec on side stabilizer, and the supine lift, I can't hardly lift a foot at all.
Go kind of easy on these. I was doing them every night and got scolded by a dr because I screwed up my upper back. I backed off to every other night.
Let me know if you need more details. I didn't have pictures to go on, and some of them were kind of unclear, but someone showed me. I can describe in more detail, or take some pictures.
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Lie on your back. Pick up your feet, legs at 90 degrees. Lower & straighten 1 foot for 4 sec, pick it up and do the other. Repeat X4.
Plank pose (the up position of a push-up). Lift 1 foot up, hold for 4 sec, put it down and lift the other foot. Repeat X4.
Bridge. Lie on your back, bend your knees, lift your butt. Lift one foot in the air, hold 4 sec. Do the other foot. Repeat x4.
Side stabilizer. Lie on one side. Lift yourself up on your elbow. Hold 30 sec. Do the other side.
"Fire Hydrant". Get on all fours. Lift one leg, bent. Turn it to the side like a dog peeing on a fire hydrant. Straighten the leg. Hold 4 sec, put it down, do the other leg, repeat x4.
Supine lift. Lie on your back, prop yourself up on your elbows, pick up your butt. Lift one leg 4 sec, do the other leg, repeat x4.
Turkish standups. Lie down, hold 1 arm in the air. Stand up, lie down. Repeat x10. Do the other side.
2009 Trek 7.2FX WSD, brooks Champion Flyer S, commuter bike