I made a memorial garden for my hamsters. I am sure that when we have to say goodbye to our fur baby, I will put something special in the garden for her.
It is still a work in progress and this isn't what it looks like today (the coral bells are gone and have been replaced with ferns or hostas). I will take an updated picture for you once everyone has come up this year.
It is difficult to see, but I have two small concrete hamster statues in the garden along with an angel that says "With You Always" on her stomach, a small heart with wings that says, "A piece of my heart has wings," and a small handmade (my Mom made it for me) stone that spells out "Nippy" (she was the first one to pass). I also have a stepping stone (not pictured) that I bought after Nippy passed. I tried to make my own, but I'm not very crafty.