Sleepover in the cow's barn...

Were having a sleepover tomorrow night. I wonder what I should bring... My Cow asked everyone else to sleep over with us. (Note: Cow is not a real cow. It's just that we call each other some sort of animal.) Anyway, it's not the first time I slept over, so I guess, I'll bring the stuff I usually take with me... I wonder how many of us are gonna go...

The house is full, my dear...
No place for you but the barn...
But if you close your eyes and think
of good things and dreams...
the haystack will be as soft as eiderdown
'neath your head...