Natural ways to start labour?

Baby is due anywhere between Dec 18 & Dec 26th (scans all showed a different due date). Obviously I don't want to do anything that can harm my baby and I want him to come when he's ready. But I reallllly do NOT want to have a Christmas baby 😂. So starting right when I'm full term (first week of Dec) my midwife and I agreed that we will do everything possible to get baby here before Christmas.

Any tips and tricks that helped any of you ladies go into labor naturally?

Midwife and I already agreed that I will drink "The drink," go for a walk, have lots of sex to get things going, but just looking for things I can try at home to get baby moving.

Thanks in advance!! :)