I have a "tidy-up time" song, and a house rule that "it doesn't matter who made the mess, we ALL tidy up together, it's a Family Job" They are not too bad really, lots of chivvying and cheerful bluster seems to work most of the time.
I did let myself down rather badly a few weeks ago though , they were being SO uncooperative and bone idle, ds1 was sniggering and chucking magnetic letters all over the floor and ds2 was rolling around in the mess going "I am Bob Builder, I am Bob Builder"
so I got a binbag out and waved it at them, singing:
Bob the Binbag
Can we fill it?
Bob the Binbag
YES WE CAN!
ds1 and ds2
And all their toys
We know what happens
To lazy boys
Tractors and diggers
And play food too
Into the binbag
With all of you
Bob the Binbag
Can we fill it?
Bob the Binbag
YES WE CAN!!
They pissed themselves laughing but they did get up and help. Now when I start the tidy-up time song, they go "No, No, let's sing Bob the Binbag!!"