I haven't done an 'Activity of the Week' in a while, I guess because with the weather being better and the girls being more self-sufficient, it hasn't been as much of a challenge to figure out ways to keep them entertained. And actually, this particular activity is one that they pretty much came up and do all by themselves. I just keep them supplied with the necessary materials, and suggest helpful enhancements from time to time, when they'll let me.
See, Clio and Elsa are obsessed with birthdays. This began shortly after their own birthday, back at the end of the December, and kicked into high gear when they went to their friend Amelia's 2nd birthday in Februrary. The obsession has manifested itself in a variety of ways: first, they just sang the Birthday Song constantly. Then, they started constantly asking for / calling everything sweet "Happy to you" cake. (We successfully introduced the idea of *pretend* happy to you cake, as well.) Then, for a while, they wanted us to draw birthday cakes for them. If you looked through our recycling bin anytime this March through May, you would find page upon page of crayon drawings of birthday cakes -- usually double tiered, with lots of fancy, squiggly decorations, and candles, of course. (I really honed my birthday cake-drawing technique. If for some reason you ever need a drawing of a birthday cake, I'm your gal.)
Now, the big birthday activity is making "Happy birthday to yous" -- their term for birthday presents. It's quite simple: you take a piece of paper, draw on or a put a sticker on it if you like, and carefully crumple it up. Then, you hand it to the nearest adult and say "I made you a happy birthday to you!" As the lucky adult recipient, it's your job to say, "Oh, wow! It's beautiful! Thank you!" and carefully unwrap it to reveal -- nothing. (I tried, once, to introduce the idea of wrap little things up inside their "presents" --- toys, legos, etc. -- but that just pissed them off. They obviously know what they're doing.) One thing I have contributed to this game, which they like, is giving them new materials to work with -- aluminum foil, construction paper, wrapping paper scraps, pages torn from old magazines, bows, etc. This, they like. But pretty much, they just like me to hang out and do my own thing -- check email, do the dishes, sweep the floor, etc. -- while they work, then act very excited when they hand me the treasure they've created. It's a pretty freakin' good activity.

We added birthday hats to the mix yesterday, which as a hit, until Clio snapped herself with the elastic.

Happy to you!!
Thanks, by the way, to everyone for your sage thoughts and advice on my last post. It's great hearing about different people's experiences and perspectives. I think those who said that a happy mom = a better mom really hit the nail on the head. I am definitely more patient and focused with the girls when I feel like I'm getting the time and space I need for my writing. It would make me so proud -- and I hope it would make them proud, too -- to one day be able to show Elsa and Clio a book and say, "Your mommy wrote this." And tell them that they can and should do what they can to follow their bliss in life, too, whatever it may be. (Birthday party planning, perhaps?)