I've seen these for smaller birds. They are mostly used to hold millet and such and I decided to try and make one. I figuredm how hard can it be? It took me 5 minutes to make this. Here's how:
Materials:
1 1/2 feet SS wire. I'm not 100% sure on the size, but it's pretty thick wire
Plastic beads
Wire cutters
Sand Paper
Needle nose pliers (I think that's what they are. You use them to bend the wire, sorry I'm not good with tools!)
Round container sized to how big around you want it.
Ok, start by cutting your wire. Then, wrap it around of your choice. Don't worry about making it a spiral shape yet, just try to get it completly round without any bumbs
Next, at the bottom of the wire, twist it down just large enoughso you can fit a clip through it. This will be the top of your toy. Next, clip off any sharp edges and sand so it's not sharp. And finally, thread on your beads! I really enjoyed making it colorful and fun for Princess Lucy!
Ok, for the bottom, I used a plastic pacifier. You can also use bells, but I thought a paccy would be cute

Use your pliers to round it off again like the top and clip and sand again. I pushed smaller beads over where the two parts meet just in case

Here's a picture of the finished product: