Co-ed baby showers

1) For co-ed bridal or baby showers you’ve attended or hosted, are children invited too or is it an adult-only event?

2) I know it’s not about the gifts, but if you’re going as a couple instead of just yourself or couple + kids, do you spend more on the gift or is it the same gift whether it’s just one woman, a couple or whole family attending? What has been your experience either on the receiving or giving end? What’s a typical amount to spend in either scenario? Thanks!