Portable well

Portable well is an item won on Treasure Hunter that acts as a free water source as well as an infinite supply of vials of water when planted. Potions made using it give 10% more Herblore experience along with a 5% chance of creating an extra potion. Although a player cannot make unfinished potions or combination potions by clicking the well, if he/she makes them near a well and clicks on it, the effect applies.

The following message appears when this happens (even if an extra flask is filled):

It can be placed anywhere that you can light a fire and is both visible to and useable by all other players. It vanishes after placed for 5 minutes. If the well vanishes but the player has not finished making all potions, he/she will continue making but the well's effect will not work.

This can also be a good money maker as you can get around 1300+ vials of water before it disappears. From a single Portable Well, this is coins, or  coins per hour, keeping in mind that multiple players may withdraw Vials of water if they so choose. With good timing and by using bank preset hot-keys to deposit vials, you can get around 2500+ vials of water before the well disappears. From a single Portable Well, this is coins, or  coins per hour.