There is no "drop all" option. You can get rid of stuff quickly in the bank. For example, leave burnt fish in the bank; eventually take it out as a note, and drop the entire set. Another option is to give free stuff to other players. This may be useful if you are fishing or mining, and want to get rid of the fish or minerals, instead of getting money for it in the ban.
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Buy them on the Grand Exchange. Another option is to kill guards around Varrock - they drop grapes.
There is no fast way other than to keep killing cockatrices, I must have killed over 1,000's of them and not one has dropped for me either.
The fastest way to get Gold Charms, is to kill Giant Crabs preferably in the Chaos Tunnels, since there is a room with about 5 of them there.Note: These Giant Crabs are over level 100, if they are 100+ You have got the right ones, the ones that are lower levels don't drop as much as those do.
There are 3 Way(s) you can get a Draconic Visage:-1st Way-Killing the King Black Dragon or a regular black dragon ( Rare Drop ).-2nd Way- ( Best )Killing the Mithril Dragon, ( Rare Drop ) also drops Dragon Full Helm ( V Rare Drop )-3rd Way- ( Easiest )Buying it off another player, either in the grand exchange, or on world 2.
There is no way to delete a Runescape Character, it always remains on their system.