For those of a truly unconventional nature, you can use sandbags or rocks, whatever you like as long as it's good and heavy. (onnit.com)
A nonsymmetrical sculptural form that resists easy categorization, the work metaphorically represents the artist, who identifies with its emphatically unconventional nature. (resnicow.com)
He makes note of this because of the very unconventional nature that digital currencies have which makes them a credible threat to the existing banking system due to the numerous benefits it presents to the end user; this includes practically free currency transfer and elimination of bottlenecks. (bitcoinafrica.io)