[Kikibosum]

I've simply elaborated on your comment below.
With this:
It's up to you to evaluate your SE to establish If the time frame Is suitable. I'm not sifting through every post.

Haven't we already discussed this?

yes we did discuss this, but I don't want to send back an empty box. I want to apply your method described in your blog, which involves substituting the weight with items such as rolls of tape etc... (I read your blog, it says this: "Let's start by assuming that you are going to do social engineering with a pair of Nike Air Max Tailwind sneakers weighing 550 grams, which is too heavy to send the box by itself. Obviously, you'll need to replace the weight with merchandise equal to (or very close to) that of the sneakers, and instead of dry ice, "you'll pack merchandise that matches what the collection points and carriers have on hand," such as a few rolls of packing tape. If you've ever worked in a warehouse, you know exactly what I'm referring to - whether it's clear or brown tape, it doesn't matter. Both serve the same purpose."
Doesn't this method with tape work? In your blog, it clearly states that it can work unless the object weighs 50kg or is a house.

Yes It does work, but for obvious reasons, It's not as effective as dry Ice.

Okay, I see. I'm thinking of going with the boxing method, but without the dry ice and therefore putting rolls inside the package. Having never done this method, I still have some questions. I pack the box as if I was really sending something, I close it. Then I (cut?) the packaging let's say parallel to the planned opening, so from underneath, I place the rolls of tape (any one, store bought?) inside checking that the weight corresponds to the original weight, then I close the hole I cut with rolls of tape of another color than the one previously used is this right?