How do I tell my adult siblings I don't want to exchange presents for Christmas this year?

I am not a grinch, but I really can't figure out what my siblings would enjoy when we seldom see each other and all have different life styles. East coast, west coast, third coast. We range from 5 star restaurant types to organic gardeners. China, silver, and crystal stemware to a hamburger in front of the TV. No plastics, watch for lead paint. "Silk and cashmere are fine!" and are not in MY budget. Nothing fattening. God forbid if the alcoholics get alcohol.. This one likes nick knacks and another one hates to dust. It is a nightmare.