The present is a rotating gift featuring Counter-Strike Source's logos with a yellow bow.
The present can be collected by simply walking through it.
The gift appears only when a player dies. When an enemy player dies, a special sound will play.
It appeared as part of the 2011 Winter sale.
The event occurred in other Valve games such as 'Day of Defeat: Source', 'Team Fortress 2' and 'Left 4 Dead 2' with minor differences (the gift had each game's respective logo).
As the event occurred 5 years ago, it is impossible to obtain the gift and the achievement that goes with it.