I have had countless ornaments from penn plax where the paint has bubbled and started peeling off, I am getting to the point that I am only using driftwood and rocks for decore, or coating anything i buy with some krylon fusion clear coat
Since I've soaked it in the hydrogen peroxide bath I haven't seen the layer of slime yet. It's barely been over a day, but after I tried the vinegar bath the slime had already started coming back. I'm hesitantly taking this as a good sign.
Hannibal (my baby betta) loves the batta hammock I got him. The wire is on the bottom and doesn't stick out if the top at all. I feel safe letting him have it. The problems listed seem (to me) to have been defects. If you want one of suggest examining it before putting it in your tank and return it if you don't feel safe. Just my two cents.
PennPlax makes good, cheap thermometers, but that's about all they're good for lol.
Any decoration that doesn't pass the panty hose test (run a pantyhose all over the dry decoration, if it snags at all it could snag on fins) is dangerous and potentially damaging, especially to males with long fins. There are too many to list!