...when you have pregnancy sickness.
Step 1) Fill a big pan or bowl with cool/cold water.
Step 2) Set the bowl of water in front of a chair on your porch or other yard area.
Step 3) Take everything off the toddler except a diaper (and maybe a pair of sandals).
Step 4) Take off your shoes.
Step 5) Soak your feet while your toddler splashes away in happiness.
We live on a third floor apartment, so baby pools are out of the question for us. We do have an enclosed balcony, and this worked great for me today.