The Cat litter trays with a top , is good, as she will keep it all in. I use a hay mix, with herbs, marigolds, different grasses, and mix it with a herb mix, and some parsley. All edible, and nibbly. Then i put in small seeds like hemp, millet , just bits they have to look for really. Dried friut, hulled sunflowers, etc they love it all. The hay mix is from Burns, or the natural range for rabbits. I might mix in some shredded paper, bits of wood. If im low on foody bits they get a handful of thier own seed mix.
The herby mix smells lovely, contains camomile and lemon balm, and dandilion
Try this Kiwi, get whole pepper, cut the top off, and stuff it with dried bits. Put it on a skewer, and use the top as a lid. Or even scoop out an apple, and do the same. Im a bit of a nut when it come to foraging, always thinking of things to keep the Kaks amused ,