Eforcity through ebay offers:

Notebook Laptop PC Security Lock Chain Cable + 2 Keys [ebay.com]

# New generic Notebook / Laptop Universal Security Cable Chain Lock w/ Two Keys, 3 FT / 1 M, Silver
# Quantity: 1
# Secures your laptop / notebook onto any stationary object [ex. Desk, poles, etc.] and prevent it from theft
# The T-bar mechanism bar allows popular utilization of this lock
# Simply loop your laptop around a stationary object with the cut-resistant galvanized steel chain
# Cable comes with 2 lock keys as an alternative spare
# Easy loop installation for lock cable
# Cable Length: 3 feet
# Color: Silver
# Material: Cut Resistant galvanized steel cable with clear vinyl coating
# Works with all notebooks, desktops, docking stations with built in standard security locking slot hole