Here is a nice project that was originally not made with repurposed pallets but. why not replacing the white-wood board used for the original project by old pallet planks ? Moreover, glass and wood (Bottle Centerpieces Kitchen)
Hanging lights on branches. Go natural with a fat branch and hang a combination of ornaments and candles attached with wire. Use twine or strong fishing wire to suspend the branch from above. You might want to try hangers so as not to damage your ceiling.