...in MY bed. I actually really love it and I know they do too.
And I wanted to have on record their favorite activity to do together. They call it Lego-Barbie.
It means Isaac plays Legos (his favorite) alongside Abby playing with her mini-princesses (her favorite).
They have the characters interact (princesses riding Lego tanks, Lego men sleeping in princess beds...)
The best thing about it is they generally get along while they play (which they don't generally do otherwise) and I hear the words "let's pretend" a lot when they play Lego-Barbie.