How can I dispose of my palm pilot and ens...

The most certain means is to remove the battery and then put the phone in a bonfire, but it all depends upon how secure you need to be and whether you want a clean but functional device afterwards and how much expense and effort you want to go to in making your data irretrievable.

Resetting the phone back to factory spec or reformatting /deleting the storage alone does not actually destroy your data.

Please add a comment to give some parameters and you'll get a more relevant answer and I won't have to make generalised comments.