The Office Playground Hourglass Sand Timer category contains sand timers ranging from 2 minutes to 90 minutes. These hourglass sand timers vary in size according to the duration of the sand. (The longer the time, the larger the sand timer.) Our sand timers are made from materials for any taste from wood to glass to metal and even plastic. Sand timers make neat desk accessories for the office. Use an hourglass sand timer to limit your meetings or tasks you have to work on. A wooden,metal or glass hourglass sand timer will add a touch of class to your desktop.