Clothes but you may want to pick those yourself. Then you could have a look at what kinda developmental toys would be useful over the next year and put those on. Or money for a savings account for him.
You could ask for membership to places, like an aquarium for example x
Stuff for weaning to save you buying it a few months later! Bath toys x
I’m just gonna get teething toys and a rattle or something save your money whilst their small they don’t understand it x