Gift ideas for a mum-to-be 2nd time round

I am stumped on what to get my SIL for when she has her second baby. For her first, I put together a baby box, mum box and dad box. I feel like they will already have everything they need, so I’m looking for ideas for baby, mum and dad (I hate how everyone always forgets the parents - like cmon, a human being is pushing a tiny one out - they deserve the gifts).

So if you have any pressie ideas for a second time mum-to-be, please, please, please share. Their baby is due 17th Dec (might share a birthday with both her nans)