I've travelled a bit and I think what is a good idea is to have a photocopy of any cards, licenses (in my case passports, visas) etc, left with a trusted family member or friend.
Should anything be stolen you can have them provide numbers etc quickly for immediate cancellation/replacement to be started.
A bit off topic, but especially for passports etc, leave them a digital copy for email to relevant places to speed up the process.
Re OP.
I am going with a credit card, a debit card and a small amount of cash.