How about buying some unpeeled collectible coins here on the forum? Many sellers accept payment not only in Bitcoins, so you will not have any problems with payment. Well, this option is only suitable for long-term purposes, because if you plan to purchase some bitcoins and spend them six months later, it is better to use a mixer. But if you are still patient, and in your country someday Bitcoin will become a legal tender, then you can easily add the purchased coins to the electronic tax return in the future (if you are one of those who pay taxes).