Years ago when it was just my cat Maeko and I, I had to travel for work fairly regularly and would be gone for a day or two, sometimes longer. At first, she would wreck up the place and I'd come home to find entire bookcases emptied all over the floor - even with friends coming by to check on her while I was away.
I set up a little shallow window box outside of a window she could perch at and would fill it with water for the birds to use as a bath, and put one of those one-way privacy window clings on it so she could watch the birds without them noticing (unless she batted at the window, which definitely happened with some regularity). After that, she stopped having as much difficulty when I was away.