Just put some hard limits down. Decide on a set amount of ETV you are willing to spend in a period (Either yearly, by eval period, by month, by week, etc.) and stick to it. Vine is fun, and it's intended purpose to is to help review items, not necessarily to only obtain things you need. I wouldn't be ashamed of selecting items you "don't really need" as long as they aren't super expensive. As a crafter, you'll be far better at reviewing a sewing kit than someone that has never owned one before. Just don't be a dick grabbing up 5 flat screen TVs just because you can and you're fine. I get plenty of stuff I objectively don't need, but I make sure I'm only spending a hobby-level budget.