Hey, I'm a childcare hirer and firer. You can put maternity and bereavement leave, or you can leave it at "no work undertaken" and if someone really wants to know, they'll ask.
Put your expired certificates, as it shows you do know how to get one. Get your 1st Aid and CPR updated ASAP, or add to your resume that you are "willing to undertake update study as soon as possible" This shows that you know a bit about the industry.
Shame you're on the coast!