Another good idea for me (since I already had it made) was rice. The only problem with this is it can get a bit messy (it depends on the child) but Puppy is usually quite good at containing the rice.
When I was feeling better (but still needing to relax) I just pulled out this tub and gave her some kitchen equipment.
Another lifesaver for me was the iPad. While Jakey was asleep and the eldest 2 at school I could go back to bed with Puppy, give her the iPad and get some sleep, as I knew she would quite happily sit there and play and wake me if she was going anywhere.
She got quite good on the iPad while I was ill. Better than me!!!
Izlles age 6
Posy age 4
Puppy age 2.5
Jakey age 10 months