It pretty much ruined Christmas that I never found festive pizza in my lidl 
Snackwise, they do some decent tortilla chips which I think are fairly new sort-of rip-offs of the manomasa ones, I’d get some of those if I were going there. Also recently got little Coconut Collaborative chocolate desert pots from lidl which are very delicious, but not sure if they were part of the range permanently or not.