Activities for newborn and toddler

Hey,
I’m pregnant with my second child who is due in October, when my son will have just turned 2. I would like to make the most of my maternity leave this time, as I honestly didn’t leave the house much or go to many groups with my first and I kind of regret it. I am taking the whole year off hopefully so will have plenty of time but I realised I’m not actually sure if there are any groups or classes that are suitable for a baby and a toddler? What have others with a similar age gap done? I imagine my toddler would get very bored and disruptive in a baby sensory class etc.
Thanks in advance!