I certainly do, if there is something in specific you want to tone then let me know, but here are a few ideas to get you going.
For toning your thighs; while seated with good posture, place a rolled-up towel between your knees. Squeeze the towel by contracting the inner thighs and release slightly--don't release all the way--and repeat for 16 reps. Keep the back straight and abs engaged throughout the exercise.
For your thighs and booty:
Sitting up very tall with feet flat on the floor, knees together, straighten the right leg as much as you can while keeping your foot flexed. Bend the knee and lower the foot back down. Touch the heel lightly to the floor (don't rest all the way down) and repeat the leg extension for 16 reps. Switch to the other leg. Make sure your knees stay at the same level (i.e., don't let the knee of the working leg drift up or down).
For your abs:
Sit with good posture holding a dumbbell (or a can of soup/bottle of water if you don't have any weights, or even your baby) in front of torso, elbows slightly bent. Keeping the abs contracted, rotate the ball to the right while keeping the hips and legs facing forward. Contract abs to bring the ball back to centre and then to the left. Go slowly and concentrate on rotating only at the torso.
You can do all of the above whilst holding your little one and none of them will add any strain on your back and knees because they are all seated. Try and walk as much as possible for your cardio, but if you have got someone to look after your baby for 30 mins - 1hour then may i suggest going swimming as much as possible, this is really good for weight loss and because of buyouncy of the water it is non weight bearing and will be kind on your back and knees, you could also do squats and lunges in the water because there will be hardly any pressure on your knees.
Hope it all make sense, feel free to ask any questions if i have confused you.

xx