Has anyone done this and added fake grass on top? I’ve just jumped the wall and got 6 pallets from builders i also got some fake grass from lidl (where else!). Just gonna stack 2 up 3 along and cover the top. Was just wondering if anyone had done similar and what would you put between the grass and the wood? (i’m **** at diy the mrs saw it in france and hinted about doing it at home.....brownie points to be gained)