I know hay as a foraging material has been discussed on here in the past but I thought I'd mention it again for anyone looking for easy, natural activities for their birds 
I've been pleasantly surprised at how my three birds have taken to their new foraging trays: hard plastic (from the dollar store), and a thin layer of bagged timothy hay from the pet store. They spend hours each day in there digging around for goodies. The little ones get a seed mix, whereas the pi gets some pumpkin and sunflower seeds along with a few slivered almonds. Sometimes I'll toss a nut-in-the-shell in there too (if it's a big one I typically crack it and put half in, wrapped up in some kraft paper) which is always received enthusiastically.
I tried crinkle paper but the pi quickly outsmarted me, by sweeping it all out of the tray with his head in one fell swoop and then just going for the exposed treats. And rocks? Well, the conure either pushed them out (the tray was shallower at that time) or pooped on them. Hay seems to be too lightweight for them to easily move, funnily enough!
I've been pleasantly surprised at how my three birds have taken to their new foraging trays: hard plastic (from the dollar store), and a thin layer of bagged timothy hay from the pet store. They spend hours each day in there digging around for goodies. The little ones get a seed mix, whereas the pi gets some pumpkin and sunflower seeds along with a few slivered almonds. Sometimes I'll toss a nut-in-the-shell in there too (if it's a big one I typically crack it and put half in, wrapped up in some kraft paper) which is always received enthusiastically.I tried crinkle paper but the pi quickly outsmarted me, by sweeping it all out of the tray with his head in one fell swoop and then just going for the exposed treats. And rocks? Well, the conure either pushed them out (the tray was shallower at that time) or pooped on them. Hay seems to be too lightweight for them to easily move, funnily enough!
