Keeping the house cat happy

Almost every time I go in to my home office to do something our cat Sabrina has made herself at home on my office chair. I can't blame her though, the chair is usually sitting in the warm sun from the window and it is high up. I have to rearrange my office furniture to clear out some junk and I was thinking about getting a window perch for the cat. I might even have my husband see if he can make one. Sabrina sure would be happy with one of these –