Commemorating my loss on baby girl's due date - ideas?

Dawn β€’ After 2 MMCs and 2 CPs in 2016, our πŸŒˆπŸ‘ΆπŸΌ is due 10.17.17.
I had a MMC at 10w 4d. I'd like to do something special on her due date. I love the idea of releasing balloons to heaven, but I know it's not environmentally friendly. Any other ideas that would be meaningful? Due date was October 13th. Thanks!