I can't think of anything other than a fever/pain medicine. Whenever DD (3) had a cold they always just told me to worry about her fever. If the cough got too bad the Ped had me bring her in but it never ended up being bad enough. She didn't start getting medicines like that until she was 2 I believe.
I feel your frustration though about the holidays. Thanksgiving one of my nephews had a 102 and vomitting, shakes, etc. SIL and BIL brought him to the In-laws but he stayed in a guest bedroom watching TV except for when he ate. By that night my DS had a fever. Thankfully it didn't get any worse than that. Currently my DH, DD, and DS are recovering from a cold. I'm keeping my fingers crossed I don't wake up Christmas morning with it!
I hope your LO feels better soon! It's no fun to be sick and especially not on Christmas.