This physical representation of the bitcoin is nice to wear into the cuff of your shirts. At the back is a solid cufflink body, that is easy to insert in your shirt and follows the angle of your cuff. Available in precious metals (so if there is trouble with the currency, you can always melt your golden bitcoins).
If you want to pay in bitcoin
, you can use this link. Please add €10,- for postage and enter the name of the product, material and post address in the description.