Are your chis emotionally attached to certain toys?
My chis have a huge box of toys, but the truth is they each have a favourite and rarely play with the other toys unless the favourites are hidden or in another room (which they can't access at the time). lol
Rocky's favourite toy is Eager Beaver, or as everyone calls it now 'the toy formerly known as Eager Beaver'. No matter how messed up it is, he insists on carrying this 'thing' around. It's the only thing he wants to play fetch with and he even sleeps cuddled up to it. He loves it so much that I just can't throw it away.
Beaver, then and now.
In Lilo's case, her favourite toy has been Mr. Fox since the first day we brought her home, nearly 3 years ago. The fox was a toy that belonged to our previous chihuahua Coco and it's the cutest thing because Lilo never ever destroyed it. She carries it everywhere in the house with her and even Rocky (who destroys toys) knows that touching Mr. Fox is forbidden. lol
Gotta love these quirky little dogs!