Foraging toys are great. They give your birds something to look forward to in the cage. These are some of the foragers I have in Boomer's cage:
This is the one he uses the most. I put a fragment of almond in each compartment everyday before I go to work. I never even have to put him in the cage, he just hurries over to the forager to get the nuts out.
Amazon.com: Creative Foraging Systems Foraging Carousel, 6-Inch W by 6-Inch L: Pet Supplies
This one I refill every week. I put a small amount few seeds, nuts and dried pepper. Then I stuff it with shredded brown paper and toothpicks so he has to work to get to the seeds:
Amazon.com: Creative Foraging Systems Foraging Wheel, 6-Inch Diameter: Pet Supplies
This is my favorite. It's easy to refill. I also put 1 of two pistachio nuts in there. The rest with shredded paper:
Amazon.com: Creative Foraging Systems Foraging Sphere 3-Inch Diameter: Pet Supplies
I also have a hanging half coconut shell that I fill with shredded paper everyday with a few seeds in the bottom. He likes to rummage in there after eating wet food. Hope this gave you ideas. The first three I posted are really good, easy to clean and durable. Good luck on your choices!