Martini Glass Decorating Ideas?

My mother went and spent over $120 on two mosaic martini glasses. They have to be the biggest martini glasses I have ever seen!!! They are mostly black with a few clear and red mosaic peices. What can I do with these glasses to decorate with them? I thought about floating candles.Any ideas on how I can decorate with these martini glasses to incorporate them into my house will be so helpfull!!Please help me!!! Thank you so much to all who reply!!! 🙂