Oh wow! What a question.
OK. I'm sure there's a way within horary to find the answer, I just don't know what it is. In lost items horaries, we use the 2nd house ruler to signify the missing object and then we use signs and house to figure a direct in terms of east, south, north and west. This has got to be treated a different way. I'll take a shot at it.
You are Venus in Pisces technically in the 6th house. It's exalted in the house of service. This placement amazingly describes you as a moderator of this forum (exalted) and looking to help the users throught the guide board (6th house). Kewl. The chart is radical. Alright. If it is this accurate describing you, then it really must have the answer.,
I'll use the 3rd house ruler to signify the thread. The 2nd house doesn't seem appropriate in this situation. The 3rd house cusp is in Scoprio, so the thread is signified by Mars in Gemini in the 10th house. Here's an interesting note; both the 3rd house cusp and the 3rd house ruler are very close to the end of the signs they're in. Maybe the thread is near the end of its category? Mars is in the 9th house. I do not know what to make out of that. Also, Mars is in the "Southern hemisphere". Maybe South here means down as in scroll down?
The Moon is received by your significator and is below the ASC/DSC. Hmm? Another clue to look down maybe? Interestingly, the Moon is on the same degree as Mercury, tha natural significator of the thread. But they form a quincux, not a major aspect. Mercury is also received by your significator. I think this shows you finding the thread, although I may be reading into it because I know you have already found it.
I don't know what more to look at here. Maybe if we had Pars Fortunae it would have offered more clues, but this is pretty much the best I can do: The thread is near the end of its category. Scroll down and you'll find it.
How did I do?
It's important to distinguish between means and ends.