Thanks for the suggestions so far, guys, I appreciate it! This is the first year my home has not included fosters since I adopted Allen and his siblings, and the first birthday since my decision to cease fostering all together. The stability this has brought to my group of cats brings me a feeling of contentment that is provoking a ridiculously strong desire to really go all out for their birthday, despite the obvious fact they'll have no idea what is going on and will actually be upset if I do anything really out of the ordinary.

I'm kinda tempted to finally purchase this cat tree
82 Inch Deluxe Cat Tree with Ramp
, but I've already got so many, there's no place left to squeeze another one in.

AC