How can I verify the weight of seafood when ordering takeaway from restaurants?
This question is not genuinely about a life hack situation and as such is off topic here.
This question about weighing food does not satisfy our criteria of thinking outside the box!
A "life hack" is generally a tool or technique used to solve an everyday problem in unexpected ways. We can't let this become a catch-all site where pretty much anything is on topic — but we are pretty comfortable with harnessing all the creative energies of our hacker-mindset culture to find those intriguing, unexpected solutions to the stubborn problems we face everyday!
So what is a life hack?
A life hack is a seemingly intractable, stubborn problem that can be solved by…
…thinking "outside the box".
A Lifehacks Manifesto
However this question is quite possibly on topic on Seasoned Advice SE.