Interestingly, I can think of just as many Scorpios to whom these don't apply as to whom they do, and many who share only or two or some small few of them. Like any other sign, you will rarely if ever find a list like this which applies to everyone born under the given sign. Astrology is anything but that simple.
Let's consider these examples in detail.
At the top as this is perhaps the most common statement (or accusation? to hear some discuss it) about Scorpios. The sign is sexual, granted, but whether or not that sexuality manifests as an active or significant part of that Scorpio's personality depends on things besides the position of the sun. Specifically, check for the presence of Venus in the sign and/or the cusp of the 8th house being in the sign. It is also possible for a Scorpio to show marked sexuality for reasons entirely unrelated to their being a Scorpio, such as other planetary factors, the presence of many bodies in the 8th, etc. But the point is, simply being a Scorpio doesn't mean being a sex fiend, or even being particularly sexually motivated.
This really depends on other factors, such as possibly having the 11th house ruler in the 4th house, regardless of whether or not any of those positions involve Scorpio. Many of the Scorpios I have known have been intensely private individuals who would not at all have enjoyed this as a frequent or random activity.
Similarly, this would have more to do with the 3rd or 9th houses (depending on whether it's a short or long trip), and if it's much of a surprise also on contact with Uranus, perhaps as lord of the sign on the cusp of the 3rd or 9th or in the house itself. It would also apply regardless of sun sign; there's nothing inherent in Scorpio as a sign that promotes the idea more than any other sign.
Despite numerous attempts I have seen over the years to attribute this or any other kind of drug use to one sign or another, I have yet to see any theory that holds up under even a little scrutiny or comparative chart study, this one included. I have known more than a few "straightedge" Scorpios.
The closest we've come to any sort of astrological indicator of drug use, including alcohol (esp. to the point of alcoholism), is strong, badly dignified Neptune involvement, especially with regard to the 5th house and/or the personal points. In other words, as with most of these: some Scorpios will enjoy it; some will dislike it; some won't care much either way—which is exactly the same that can be said for the 11 other signs.
More about 5th house involvement than signs as such, though Scorpio on the fifth, provided the ruler and any planets in the 5th are well placed, can suggest someone who enjoys a good party.
I have combined these two both because they have a certain similarity and because I really know of no explicit astrological indicator that has anything to do with either of them. The difficulty is that these are things that can have many different motivations, and it's only the motivations that astrology can help us uncover, not these more abstract things. For instance, going to flea markets: is it because of an attraction to their particular ambiance, the nature and environment of it all? is it because of a thrifty nature? is it an interest in old/used, potentially antique, items? Each of those would have different astrological indicators. Similarly for having a garage sell or selling at flea markets, etc.
This seems a bit of a cop out/generic answer that doesn't even try very hard. Unless there is a specific chart issue that discourages an interest in making money (major lack of earth signs, no 2nd house presence or very poorly dignified, etc.), everyone no matter their sign is interested in this either by nature or the simple necessity of the world we live in. Similar to the flea market issue above, this could also vary according to motivation. Is it making money simply for the sake of having money? Look to the 2nd house. Is it making money because of the prestige it brings? Look for ASC or MC connections. Is it for the sake of power? Look for Mars or Pluto involvement (which could bring in Scorpio, as they are the classical and modern rulers of the sign).
This can relate to the 3rd and 9th house travel issues as mentioned earlier, but Mercury in Scorpio does seem to have a fondness for it. It is possible however to have Mercury in Scorpio without being a Scorpio oneself, and possible to be a Scorpio without having Mercury in Scorpio, so again your proverbial mileage may vary on this with any given Scorpio.
Not quite sure what to make of this one. I can only think of two Scorpios I have known personally who had any sort of enjoyment for camping activity, and one was probably better said to have tolerated it rather than enjoyed it. Unlike many of these other items, this is an issue that has a strong connection to a sign, however—it's just that the sign is Sagittarius rather than Scorpio. Out of my own client records of the past twenty years, it seems those with Sagittarius in or on the 5th house or ASC exhibit the greatest enthusiasm for the subject.
Hope this proves of some interest or use to those studying the topic. Remember: your astrological charts and characteristics are far richer and more complex than simple sun sign lists; and your personalities are richer still.