Feet/platform for Nola Vipers speakers

Hello,I purchased Nola Viper IIas off the 'Gon a few months ago, and i am now in the process of setting them up. However, they came only with the metal spikes and I have wood floors. As the wife would kill me if I marked up her cherry wood floors, what would you recommend placement on hardwood floors. Thanks
Ok, I should have done a search first but I found my solution. The wife will be very happy.