I just built a new indoor bookcase enclosure for DonnaTello. Does anyone have any ideas on how I can make a cover to keep kitty out? Something that will allow lights and heat lamps to penetrate the enclosure. I'm really stuck on this. Something thats removable so I can put it on when we're not home. The darn cat (my rescue from our barn) is drooling at the thought of it being her new HUGE litterbox! Yuck!!