Devices and methods of use for brush holders are disclosed. The modified alkali silicate matrix is made by reacting an alkali silicate, a non-silicate network former andor reactive glass, water and optionally one or more multivalent cation selected from Groups 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16 of the periodic table such as an alkaline earth salt, water and optional processing aids. The kickstand can be rotated to various positions to provide support for different orientations of the computing device.