I also usually do my bases on foamcore and cover with fondant wetting the foamcore with water to make it stick, wrapping it around the sides with a ribbon. With the fondant covers, I have had problems with finger impressions showing up, etc. but have learned to prep far ahead and let it dry for at least a day or two before placing the cake. I have also noted Woolley's/Peters' suggestions of flooding with royal icing, but hate to make royal icing for just the base. With everyone mentioning paper, is there concerns for food safety? I read someone where from another person's post that they found foodsafe clear contact paper at Michaels or somewhere that could cover over any paper, hence foodsafe and no concerns with bleeding of the paper, etc. I live in NYC and believe it or not, there are no Michaels in the city, so I'm always heading to arts stores to picks things up, probably over-paying. I tried cardboard boards early on but they are tricky and bend too much. My last trip I bought foamcore from Staples (their presentation boards) and it really wasn't good to cut through to make shapes - the foam was not solid through the sheets, so i'm back to the drawingboard on finding good foamcore.