I've not whelped a litter of pups yet. But surely all you need is:
For baby:
Something to shit in (x 1 pack of nappies?)
Something to wipe their bum with
Something to wear & a blanket
Something to feed them with (Unless you're going with your boobs, but a bottle just incase it doesn't take.)
For you:
3 more pairs of pants than you think you'd need, nursing bras.
Panty liners
Slippers for on ward.
2 x change of clothes. (One (with fanny access) for pushing & one for going home in) and a bag to put the dirty clothes in.
Toothbrush, hair brush, moisturiser/face cleanser/your every day skin routine, shower gel, shampoo & conditioner.
Towel?
Sweeties, snacks and maybe a bottle of diluting juice, perhaps your own water bottle so you know you're hydrated.
Phone charger
And just chuck it into any weekend bag that you have that fits it in? Or you find 2 of your biggest on trend for 2010 "oversized handbags?
eta: now visiting is so restricted with Covid, surely if you have to stay longer you can send dad/your birth partner to bring anything you've forgotten from home?
Honestly, I am SO FOND of you, you little crunky snack!