I found several K’Nex Nintendo building sets for $4.99 and under! These would make great stocking stuffers.
Nintendo Nintendo Diddy Kong Kart Building Set is $3.19!
Nintendo Donkey Kong And Standard Bike Building Set is $3.39!
Nintendo Yoshi and Standard Bike Building Set is $3.99!
Nintendo Nintendo Bowser and Standard Bike Building Set is $3.99!
Not $3.99 but here are sets marked $4.99 and under which is still a great deal!
Nintendo Nintendo Toad And Standard Bike Building Set is $4.79!
Nintendo Luigi and Standard Bike Building Set is $4.99!
Nintendo Nintendo Bowser And Standard Kart Building Set is $4.99!
Mario Kart WII Mystery Bags is $2.30!