Lampard chuckled on the touchline as a cherubic set of Chelsea fans tested their skills, met the players and even grabbed the chance to play against them at the club's Cobham training ground.
The manager might have been mildly thankful, though, to see left back Fikayo Tomori wait for the unusual pre-Christmas event to put in an uncertain showing against a fleet-footed wing wizard from Chelsea under-8s.
Attempting to contain a prodigy of little more than half his height down the wing, the defender who received his first England cap this year was deceived by a Cruyff turn and beaten to the byline.
Tomori then tumbled to the turf as his mini-menace, dressed in a Santa hat, fired in a cross in front of the watching crowds.
Tomori's torture was only one of several uneasy moments for Chelsea's players during a spell of festive fun that might make the visit of Southampton in the Premier League today seem relatively routine.
Tammy Abraham has one England goal and 11 Premier League strikes to his name this season, but the impressive striker cut a hapless figure at times when he went in goal and watched some of the youngsters blast penalties beyond his reach and into the net.
Speaking alongside Abraham, fellow international Mason Mount admitted: 'I didn't think we were that good when we were that age. It's good to see the future coming through and there were some brilliant players.'
England midfielder Mount revealed he had been to similar showcases in the past in order to meet his Chelsea heroes as a child, posing for portraits with John Terry, Ashley Cole and David Luiz.
At a separate event, Tomori and Mount helped Junior Blues carry out a series of capers from a naughty list.
Among the pranks, the young supporters followed the pros to ask Willian, who scored both goals in their win over Spurs on Sunday how they could replicate his dazzling teeth.
They also grabbed a selfie with Willian's Brazilian compatriot, Jorginho, and flossed with England midfielder Ross Barkley.