What are you stuck with???

I think Can has the right idea, has anyone figured that we have coffee and wine but nothing to drink from, although I'm not averse to drinking wine from the bottle and we could use empty coffee jars for glasses.  Oops just looked back,  it was boxed wine, so we're stuffed!

If we're allowed another swap (just pushing the boundaries here) the concrete would go and substitute for knives or drinking vessels, but knowing Veggie I'd be disqualified for breaking the rules

???? You can stab the box and sip through a hollow stem of something!