You can use penguins for pins down there.

Pinguins.

that's actually a violation of the Antarctic Treaty, unfortunately (?)

(one of the few things I remember from the myriad videos they make you watch before you go down to the ice)

Pursuant to sub-paragraph (b) of article 3 of Annex II to the Protocol on Environmental Protection to the Antarctic Treaty[1], a permit to "kill, injure, capture, handle or molest" penguins may be issued "to provide specimens for…other…cultural institutions or uses," which could arguably include bowling.

IANAL, YMMV, etc., etc.

[1] https://documents.ats.aq/cep/handbook/Annex_II_e.pdf#page=2

hmm, ok I'll ask that at the briefing next time I go!