Probably the category with the most coins used is Belts. They come in all sizes and mostly have the same coin repeated many times. They have single, double or triple rows, depending on the size of the coins employed.
My first example is made almost entirely of quarter reale coins of Guatemala -1894 to 1899. These small silver coins are frequently encountered in Belts, Necklaces, Bracelets and Brooches. This belt is made of 166 quarter reale coins and a single - cutout - half peso coin included in the buckle. Each column of three coins is backed with a strip of metal that effectively keeps the coins aligned and stops the the belt from getting tangled.
My second belt comes from Brazil. It is entirely composed of thirteen 2000 Reis silver coins of Emperor Peter II joined together by short strands of chain. These coins are the equivalent of the Peso or Dollar. The substantial size of these coins requires only a single row of linked coins
This belt would seem to be, at first glance, from the UK. It is composed of 67 silver threepenny pieces of King George VI. The heavy silver clasps incorporate two 1887 Queen Victoria Silver Jubilee Crowns. However the dates of many of the three penny coins (1942, 1943, 1944) indicate that the origin of these coins is not the UK, as coins of these dates were all sent to the Caribbean.
This belt is comprised of 11 silver rupees of Burma, showing peacocks. The elaborate, and substantial, cast silver clasps show two Hindu deities. These are also Burmese in origin as the female deity is fully clothed, whereas the Indian equivalent is not.
One of my favourite categories is so-called 'Gaucho Belts'. These heavily decorated belts were supposedly worn by Gauchos in Argentina and other South American countries. The example is an early one - many are modern tourist wares. The coins, left to Right are: Three Argentinian Pesos, Two more Argentinian and one Chilean Peso. A Bolivian 8 Reales dated 1808. A Bolivian 20 Centavo and a Peruvian Half Peso dated 1927. A Brazillian 100 Reis and a Chilean Half Peso dated 1885. A Bolivian 20 Cent and a Brazillian 500 Reis dated 1860. A 2 Reales of Peru dated 1790 and a 2 Reales of Peru dated 1797. Two plated Argentinian Bronze 1 Centavo coins dated 1941 and 1946. A One Peso of Uruguay and two small silver coins. Two plated Argentinian Bronze 1 Centavo coins dated 1941 and 1946. A Peruvian 2 Reales dated 1827 and a colonial 2 Reales. A Bolivian 20 Centavos coin and a Mexican 50 Centavos coin. A Hungarian Copper-Nickel 50 Filler coin of 1926 and an Argentinian 50 Centavo coin of 1883. A Bolivian 20 Centavo coin and a Bolivian 50 Centavo coin. A Peruvian Peso dated 1864. The Eagle and three 'straps' are silver castings. The two 'pouches' are dummies.