If you're making a quick stop at the shops, a cable lock could be the ideal choice for you. Available in various lengths and thicknesses, the smaller, lighter options can often be fastened to your bike frame for easy transport, similar to folding locks. While cable locks don’t offer the highest level of security, they’re convenient and easy to use, perfect for casual riders or those not locking up a high-end, $12,000 e-bike.