Perhaps in a decade we can efficiently do this with an ILLM (insanely large language model) with eidetic memory, trained on the web and all our other media.
Store the model in an elaborately constructed polygonish gold-etched glowy ball that fits in the palm of a hand, complete with a plutonium thermal energy core, carbon fiber audio sensor and speakers, and then hide it somewhere - but leave clues.
I know we are not supposed to post Chat Gen stuff here, but I couldn't resist getting some help with the critical part, naming the artifact:
Omniscube of Existential Continuity
TerraQuorium, a Human Codex
PlutoniLex, Oracle of Mankind
The Nexus Cube of Cosmic Archives
Anthrokora Galactica Rosetta
Helixicon Pinnacle of Human Intellect
Quintessence Eternal Brain
MetaMnemnon, The Earth Archive
Solon's Cubic Echomancer
Tempuscrate's Timeless Witness
Apotheotic MindStone
Pandora's Polyhedron: Repository of Reality
Aside from the names, I think placing devices like this on various solar system bodies would be an effective and convenient back up for aliens to interact with.
Just a couple years ago this would have sounded fantastical and impractical. Today it would be sensible.