I wanted to do something for them for Halloween, as well, but wouldn't dream of putting anything on their bodies.. what I was thinking of doing instead was either something that would hang from the side of the cage or something that would stand by itself, or maybe even a border of sorts with holes cut out that to them would be like little windows to peek through, but from the front would be similar to those old wooden cut-outs you'd see on beaches that people would put their faces up to the holes and look like they were in whatever scene was on the cut-outs lol...
I haven't come up with any specifics yet, but I'm a holiday nut and wanted a way to have candid costume pics for them like I do for the rest of the family but wanted to do so in the least evasive way possible..
I'm also trying to come up with some Halloween / autumn themed pieces to put in their cage to make it more festive.. it doesn't *have* to be a costume to make them a part of the holiday.. getting pics of them climbing in and out of pumpkins or other festive pieces would be just as cute..
I haven't come up with any patterns or anything yet, but when I need to sew things that I want to maintain their shape, I usually start with that plastic canvas craft stores have that people used to use with yarn to make things like those old tissue box covers.. they come not only in round, square and shaped pieces, but also in big sheets so you can cut the shape you want and you can easily sew fleece right over the top of whatever shape you use.. and the best part is that you can pop the fleece-covered canvas creations right in the washer and then dry it on low heat in the dryer :>