Wooden boxes should work like ore boxes holding more than one log but have it set so it holds tiers below not all logs for example:
Reg wooden box - holds only reg logs
Oak wooden box - holds reg and oak logs
Willow wooden box - holds reg, oak and willow.
Max tier for F2P should be here due to being able to cut yew logs.
Wood spirits - no way to obtain other than nests/Grand exchange, meaning Ironman f2p cannot obtain them and p2p irons have very little way of obtaining.
They should be added to drop tables for f2p this can be done via goblin wood raids, similar style mining raids drop stone spirits.
Another way is obtaining they should be added to skilling bosses as they are skilling resources.