It depends...
I have a JT backpack for stock games at Splattttttt's. I can fit everything in there for the hike through the woods.
I also use a $20 duffle bag that fits most everything I need. In fact, I posted about it last year...
Reebok 24" duffle bag
I also have another $20, 36 inch rolling duffle I got at K-Mart for big games. That can hold everything for 2 people including markers.
For my markers I usually go with gun cases. A nice hard shell Flambeau rifle case goes for...you guessed it...$20 at dicks sports and can hold 2 guns, a primary and a backup.
I'll also use cheep sling backpacks for marker cases too depending on how odd shapped they are. you can get these cheap right before kids go back to school.