Zelda's not fascinated by the printer itself, but she's absolutely intrigued by the sound it makes when it's printing and the paper coming out of the slot. No matter where she is, if I start printing something off, she comes running as soon as she hears it start. Then she'll just crouch in front of it, right where she won't disturb the paper, and she'll just sit there and watch it do its thing! She doesn't bat at the printer, though, so I don't know how to help you with Pouncer. If spiders aren't an option, maybe moths?