Spurred by this I opened my trusty Posti phone app, and lo and behold, I do indeed have an arrival notice (which my even arrive through the mail slot in our front door any day now). Following the instructions therein, I went to tulli.fi and filled out diverse assurances to the effect that the parcel whose impending arrival I eagerly await is both a) worth a mere pittance and b) not acquired in any remotely commercial fashion, which prompted the (web servers of the) customs authority of this august republic to release said parcel for final delivery without my having to pay even a sliver of VAT.

Remains only to be seen how fast (or not) this final leg of the journey will be. (I'm guessing not so fast: I'd had a preliminary notice, that a parcel from you was about to arrive... Six weeks ago.)

Yeah, it cleared immediately after I filled in that form.

I printed out the confirmation, not in triplicate, but still. Am planning to take it with me to the post office to shove in their faces when they (almost inevitably) claim it's not properly cleared or something.