As far as I can tell, the Clear Plastic Pocket Protector and cheap elastic string are available every year.
Lanyards are often available, but last year they weren't at the booth where I bought my badge. Big Huh?
I had to track some down.
This year's Lanyard is Buffy Legendary, last years was Big Trouble Legendary, and I think year before was Alien Legendary.
I had an MTG one from some point in the past.
I usually keep my badge in my Schlock Mercenary badge holder. It also has room for Tickets and such.
Lanyards are great for keeping a single car key on if you're parked nearby. Tuck it away in your shirt and it's easily available.