Ol fire-hose ungulate feeder (c) Toronto Zoo
Image detail for -The Phoenix Zoo: Learn: Animals: Behavioral Enrichment
wild animal enrichment images | Battle Creek AAZK
Donkey pulling toy?
Cool giraffe enrichment.
Meant for monkeys, but definitely a good idea for lots of species! Try with the grizzlies?
Image via Daily Dog Tag
Slow hay feeder it is the Little short laundry baskets and you just wiring together
Various Scents in Spray Bottles. Make your own flavors.