2) Pet
The odd thought that had crossed his mind more than he cared to admit.
Bilbo was sitting in his chair and smoking his pipe when the thought occurred to him again. Why not get a pet? The idea was trivial and pointless what use did he have for a pet? They were just something so unheard of. Who had ever heard of a hobbit with a pet? Besides he was far too busy thinking of other things he didn't have room in his brain to worry about some small creature.
What would he even keep as a pet anyway. All the animals he'd heard of were either too big to fit in his hobbit hole or were- in some way or another- dangerous or bad-tempered. Having a pet was absurd. He concluded and went on smoking his pipe and thinking of absurd things.
