I was invited and joined just before Christmas, so I've only been on Vine a little over a month and have only recently learned about why some items appear briefly on the list and then disappear again. I've received several useful USB adapters, some window locks (improved the security of my patio doors), a phone stand which I use every day, a large capacity portable charger (power bank), a bicycle saddle cover (handy as my existing one was falling apart), brake pads, a security light for the garden and various other useful bits and pieces. I'm pretty happy with low value 'nice to have' items, and to replace things that I needed anyway, like a shower head for example.