Adam Savage made a limited-edition "everyday carry" toolbag out of old sailcloth, with room for everything

Got something similar at Hofer1) last year. Green nylon on a black rubber base shaped like a trough. Which means it can sit in wet dirt without toppling or the inside getting wet. Also, the ‘Gladstone’ format is very practical.
Actually, I bought two. One is used for tools, one is used as a briefcase. Which is sort of like a toolbag anyway, come to think about it.

1) Austrian branch of Aldi Süd. There is no escaping them. Resistance is futile.

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