Pledge a tier and add the value of both items to your pledged amount. We'll be using Backerkit to manage pledges and you'll be able to adjust and add items during the survey process at the end of the Kickstarter!
To get the floaty thing and a Hex Chest, back the floaty thing tier and add the value + shipping for your Hex Chest to your pledge. When surveys go out (about two weeks after closing), you'll be able to specify your items and tell us what you want ^_^
The Elderwood Winged Dice are a set of 7 polyhedral dice (D20, D12, D8, D10, D10 (decader), D6, D4) that have our Phoenix logo engraved in place of the high numbers. We have pictures of the blue/blue ones in the first update, and will hopefully have pictures of the others available near the close of the Kickstarter ^_^
Don't see the answer to your question? Ask the project creator directly.