Do they sell plain rings anywhere? I've spent the past hour trying to find them on the internet and all i can find are jump rings and split rings. What does everyone use when they want to add a homemade charm to a ring? Im just looking for something plain. Possibly one with a flat area on top to which i can easily attach a stone or charm...I could have sworn i've seen something like this before sold in bulk. Was i just imagining it?