guys, can we just not pick fights here? i think we get the point that loose threads are the major danger of some happy huts, but let us just remember that we each make our own decisions and must inevitably live with our own mistakes should something go wrong. every toy carries a risk and we all make our own decisions based on what we personally feel safe with and what we do not. owners choose to do risky things such as birds outside without harnesses, letting their larger parrots interact with smaller parrots, letting other pets in the same room as the birds, give toys that could be harmful, etc, etc. not everyone will agree with everything, so can we just state what the dangers are, since that's what the OP asked for and just leave it at that instead of picking at each other when it's just not necessary? it's more pleasant for the other people on the forum to just get straight to the facts instead of going through an ongoing argument
hopefully not fueling anything here.
but back on topic, to the OP... if you are going to make one, do you have any ideas? great items to have on hand are non-pill fleece, cardboard, and even cardboard tubes. you can use cylinder cardboard food containers or plastic ones if you can get them