Did anyone else have the "Things To Do" books when they were growing up? If I remember right, they were a series, like "Things To Do... With Science," "Things To Do... With Art," etc. I loved those books. (I'm pretty sure my mom got rid of them, which kills me, because I can't find them on Amazon and I want a copy for myself!)
Unfortunately, it feels like this is also the hardest age to find appropriate and interesting activities for. :( They're still putting things in their mouth when tired or distracted (or just ornery, lol), their coordination is improving but not very steady yet, and we're not good at sharing at all. (Like, at all at all.)
Here's an amazing tutorial on how to make an easy, elegant water/sand table that I think is just brilliant. :) Or, if you don't happen to have $50 and a couple of hours lying around, follow this link and create a makeshift table from storage bins.
2. Bubbles - I tried this for the first time yesterday and the kids loved, loved, loved it! I simply pumped out a good amount of Johnson's Baby Shampoo into the water table and added a little bit of water (just enough to make lots of suds!) using the hose on high pressure. The babies started giggling as soon as the suds appeared and couldn't wait to dig in! When the bubbles (or water) get low, refresh with another pump and a whisk. :) I also did the same thing in a couple of aluminum roasting pans we have for water play, but I added a drop of two of food coloring to the suds and swished it around for bright colorful bubbles. Lucy especially thought this was amazing; her play was short-lived because Miles immediately dumped all the colored bubbles out so he could walk around banging the pans together (lol!). We'll be doing this again soon.