Try and throw some rope into the branches and shake it with someone ready to catch it. Looking at it the lower branches would be ok if you can't get enough rope.
Or plant another tree next to it, sit on it & just wait for it to grow 40' then simply reach across and grab your drone then get a mate (who you have given the remote control too) to fly you down.
Attach some tuna fish to a fishing rod. Use the rod to smear the tuna onto the drone. Then send a cat up the tree. Attracted by the tuna, the cat will gravitate toward the drone and wrestle the drone loose so it can take it home to lick the tuna off. Your job is to catch the cat.
Tell the council it's a death apple (or manchineel) tree and they'll be round like a shot to chop it down. Then ask them nicely if you can have your toy back or your mum will go mad.