i wouldnt give rawhides if your not there.

but kongs are great. you can also hide little treats around the house so she has to search for them. Also buster cubes/balls are good toys.
I rotate my toys (i have a bunch of them so i divide them into a few groups) I leave out one group for a couple/few days then take them all away & give them another batch, they think they are new toys & have a blast all over again.