Christmas Ornaments

I need something creative to decorate my Christmas tree with. Regular ornaments are just so boring. Last year we got in a shipment of colorful lizards in the store so I hung lizards all over the tree. Then I took them all back and we sold them all so I have no more lizards. I was thinking about decorating it with women's underwear but I don't think my girlfriend would like that (nor do I think she would like it if I used hers.) This year I was thinking about decorating it with empty Red Bull cans but I think that might look a bit tacky (although not as tacky as beer cans.) It is a small tree so I need something small-ish to hang on it. Any ideas would be appreciated. Thanks.