I had to beg, rob and steal to get my Max hat (Mostly steal), AND I AIN'T LETTIN' IT GO!
Seriously, for about a month on the server I play on, my name was "mDt (GIMME DAT MAX)" or some variation of such. At one point I think it was "Will Sex For Max."
As far as Sam & Max swag goes though for TF2, you CAN still get the Lugermorph as well as a Freelance Police badge by playing Poker Night at the Inventory. The badge reads "License to Maim" - I love it.