Collateral is something that can easily be resold to cover the loan value plus interest should the loaner default on the loan.

- The best collateral is another crypto-currency, such as Litecoin (also written as LTC).  Coins must be moderately traded on multiple exchanges.
- Some digital wares such as domain names can be considered as long as the user cannot recover it.
- Small valuable items that can be shipped though the mail - i.e. gold, silver, iphones, etc.
- Large items, such as a motorcycle or guitar can be used if you live close to the person giving you the loan.  Try localbitcoins.com