I'm pretty sure that the playermodel pack adds a "Fortnite" section to the spawn menu and when you open it (or click the '+' button) then it will bring up 2 more submenus called "Characters" (Or something along those lines) and another one called "Items" or "Props." If the "Fortnite" menu doesn't come up you might need to install the "Extended Spawn Menu" mod. If that doesn't work then I could check my game. Let me know if this works !

I thought the playermodel pack was just playermodels and not props like jugs and stuff. That's a LOT of models. in that pack

They're not in the playermodels pack?

Which pack did you get the shield drinks from?