A radio (or the radio channel on the TV) is helpful for the boredom of endless lego games, housework, etc.
Bulk Buy Baby Wipes.
An insulated, plastic, lidded hot drinks cup will be essential in the first few months if you plan to finish any hot drinks.
Napisan is not just good for nappies - it helps with towels & bedding & you can wash use it at 30 to keep your utility bills down. You will be doing a lot of washing.
Breastfeeding can hurt, especially at first. The baby is born wanting to suck, that doesn't mean it's got the technique right as soon as it pops out!
Trust your instincts, sometimes it's better just to go with the flow.
You can read all the parenting guides in the world, that tell you how much food your child should be eating, how long they should sleep, at any given age. The child doesn't know that & will do their own thing.
You will value your time together with your partner much more, & look back to pre-children & wonder what you did all day.
It's terrifying, and the best thing ever.