My 4-month old kitten vomited 2 times today, approximately 8-9 hours ago. The first time, nothing except a clearish fluid came up, but the second time (about an hour later), an elongated (stretched out) plastic twist-tie about 5.5 inches (13.5 centimeters) came up with the fluid as well. The tie had teeth marks on it so I suspect that she had been playing with it and tried and succeeded in eating it.
After the second time she vomited, she had a brief period of about average energy, but she has slept for most of the time. This doesn't seem out of the norm because she is a pretty calm cat if nobody in the house is doing anything exciting.
Since then, I've seen her stalk a ladybug that got in the house and I just gave her a toy and some wet food and she seemed to regain some of her energy. She's eaten both her wet and dry food since then.
What should I do now? Obviously the safest thing to do is to bring her to the vet, but if this is something that can be treated or alleviated by a home remedy then I'd rather not pay the fees.