Tell a work friend or someone you know causally about 23andme. If they show interest suggest buying the kits together to save on shipping costs. Mention that you have a few friends who would be interested as well and give them the cash for a few kits. Their credit card and address will be linked to the purchase. When the kits arrive sell your extras to different causal friends and register yours with completely fake information from public wifi. 23andme will have your DNA but nothing to link it to your identity.