Hi Rant22,
You have a couple of options:
1) chop or blend them up in vinegar (you can add other ingredients, such as coriander, if you wish) and put into a sterile jar. They will last indefinitely
2) chop or blend them up and freeze them (e.g. using an ice cube container and then transferring the lumps into a sealed bag/container). This is my preference. They also last a long time (many months)