Step1: Spawn logs for your firemaking level and a tinderbox by typing in the codes in bold and then the amount you would like to spawn (eg ::item 1511 27)
Step2: Click on the quest icon and then click on the quick gear tab down the bottom, when your inventory is how you would like it click the (+) sign on the ui to save your inventory
Step3: Slave away. When Inventory is empty click the tab labelled "custom" in the quick gear UI to reload your inventory with logs
Phoenix pet is obtainable off of spawnable logs
Item ID
::Item 590 - Tinderbox
::Item 1511 - Lvl 1 - Logs 400 exp per
::Item 1521 - Lvl 15 - Oak Log 600 exp per
::Item 1519 - Lvl 30 - Willow Log 900 exp per
::Item 1517 - Lvl 45 - Maple Log 1350 exp per
::Item 6332 - Lvl 50 - Mahogany Log 1575 exp per ( Best Spawnable Log)
::Item 1515 - Lvl 60 - Yew Log Couldn't test, unspawnable, buyable, choppable
::Item 1513 - Lvl 75 - Magic Log Couldn't test, unspawnable, buyable, choppable