Has anyone displayed a naked egg before?

I know this might not be the place for it, but I think I’m shadow-banned from Taxidermy . net and I’m not sure who else to ask…

I just (legally) got ahold of two abandoned Killdeer eggs and now I want to display the shell of one and the insides of the other. The shell one is done, I blew it out and filled it with wax, but I can’t find anything on preserving the insides of an egg.

I have the whole egg in the fridge and I plan to dissolve the shell in vinegar then submerge it in some kind of preservation fluid. Right now, I’m looking at alcohol and borax, but I’m going to try it on a chicken egg first. I’m just looking for some more ideas since the alcohol and borax solution only came up on one site, with no ratios, that I’m 90% sure was AI generated. Everything else shows how to preserve them for eating, and they only last a year or two.