Well, I did say that I would release the thing, and so I have. In practice I decided to charge the princely sum of L$0 for it, including two sets of appropriate official flags; anyone wishing to leave a donation to offset my Uploading Charges is more than welcome, but I dare say they will not bankrupt me.
The Semaphore Animation Device is available from my Caledon shop of course, and also from ShopOnRez. (I am afraid that I do not have the patience these days to list items on SLExchange, certainly not ones from which I gain no monetary reward.)
A lengthy page of instructions is available for the benefit of insomniacs, and for those who are still not asleep, the main script itself is also viewable.
The item itself is not transferrable. Whilst regular readers will be aware that I am not the most assiduous in pursuing Resellers of my Free Items, counting it as one of the consequences of releasing items that are both Copiable and Transferrable, that is not to say that I like it when some reprobate grabs things which I set out and re-packages them as part of some godawful "Business In A Box". In actual fact I do not object too much if a New Resident decides to scour the Grid for free items for which he or she may con some Even Newer Resident out of a few coppers - at least some effort goes into that practice, and it may be said that they perform a service - but the industrial reselling of Free Items is something which annoys me somewhat.
Furthermore, this morning, when I approached someone in their appallingly-textured shop and politely requested that they cease selling my Grid Crash Protection Box for monetary gain (I have no illusions that such action is technically punishable by what Laws of the Land exist, very little is, but as a Free Citizen I am quite at liberty to make that sort of request with ethical justification, particularly as there are clear notices indicating that these things are Not For Resale) I was treated to a dull little lecture about how "we don't own anything therefore I can sell anything" and how I should read the Terms Of Service, as if I had not read them enough times to be able to repeat them verbatim.
This annoyed me, even though said seller did in the end remove my products - apparently customers had been complaining that the Grid Crash Protection Box did not actually protect them! perish the thought - and thus I am disinclined at this time to offer copiable and transferrable items, even though many fine folk would find this convenient.
I do apologise for this tangent.