C.L.
My 3 year old loves to play with water so I let him play in the big sink with water and his toy boats. He loves it. I told my husband we should buy him a water table and put it in the garage for the days that are nice and we can leave the garage door open since we don't have a backyard. You could probably do the same for rainy days too. Other ideas we've done is play-doh, pretend cooking with using beans. My son could spend hours if I let him just pouring beans in and out of things all day. We also have a tree house tent that we use to play with. Hope this ideas help.