Evert Esmark thinks sustainably. He sent the tip over the bottle with - is it - soya, which you get with the sushi packs that are sold in supermarkets.
Evert does not collect these things in a maniacal way, but he always has two with him when he is traveling on his classic. One contains wax, the other a mini amount of oil.
And that can be exactly what you might need along the way, says Evert.