I have these games for trade. Let me know what you might be interested in for your CS:GO gift. Yeah 60 games might be too much of course lol.
You already have plenty of games so it would be hard to come up with 50+ bundled/free games you don't already own. Since you're asking for a high amount of games and even asking for the other user to go first (I wouldn't but one might be stupid enough to do so), what happens when multple games would be dupes? You can't return activated keys so you would for example activate 30 keys but others would be dupes (not because of a scam attempt but because keys can easily get mixed up with that amount) but replacements offered you'd already have...also, it would be too much of time and effort wasted for a 5€ game.
Anything here http://www.steamtrades.com/trade/qIinp/h-steam-games-w-steam-games for CS:GO?