No ideas really accept one of those ball parks, do you have those my little g/son whose 20 months loves them. I was thinking what we could do Easter Saturday as our weather forcast is for rain too. He loves the park and outdoor things though so a picnic / walk would have been great. It's an awkward age for entertaining really. Some places have those little animal centres that are indoors or at least undercover some of the big garden centres are getting them my way. Swimming would be good but not if she'll say no. Good luck anyway.