Having forgotten to remove my giblets cover a couple of times when switching on my Mavic Air at home I found these Mavic Air Warning Stickers which I have received today. Two sets for £2.50 incl P&P and the seem pretty good quality.
They claim that they are printed on 3M vinyl and UV laminated to protect the finish. Waterproof and will not leave any residue when removed.
Certainly stand out!