So Elpha had the poo/vomit incidents in quick succession, Fee and Hear are dropping a nap
and Dreaming has her hands full.
I feel embarrassed complaining about DD after reading this!
Fortunately, we've two amazing nights (knock on wood). YAY!
Our problem was that she just got up in her cot and refused to lie down, so I had to restrain her in my arms, so we put her down in her bedside cot and left the room! 
This was the first time ever we left her alone to fall asleep
but it worked SO well! To be fair she wasn't upset at all, just kept standing up, so we went in every 5 minutes or so and put her down again. First night it took 35 minutes and last night it took 1:20m (she wasn't as tired) but she eventually turned around, cuddled up and went to sleep!
This is not a huge victory, as she was capable of falling asleep in her cot before the standing up/cruising thing, but it's good that it worked without tears.
The MAIN thing was she slept through until 6am, woke up had a very small feed and slept again until 8:30am both nights!
DH's theory is that she was falling asleep really tense, fighting me when I was holding her and kept waking up because she didn't have the opportunity to stand up/explore the cot so she was obsessed. It really seems like she gets the standing up thing out of her system and by the time she falls asleep she's relaxed and ready.
Might be a fluke, but that's two nights in a row so we'll be trying it again tonight.
I'm seriously freaked out with the nap dropping though - DD just turned 10 months (I think she's very close in age to fee and hear's babies) and she is showing signs of shorter afternoon naps already. ARGH!
On a cheerier note, your babies are very cute Dreaming and I also think the one of the right is the night owl.