Shipping Economical Methods 
Old Site
Things that you should consider.
Shipping Scale ~70lb or better.
86lb/0.1oz Scale
Lab Scale for Small Items
Laser Printer for printing labels
USPS account for Scheduling Pickup
Hot Glue Gun for making new sized boxes. Cut boxes to allow for 2" of padding or 1.5" of styrofoam.
Styrofoam insulation from Big Box Stores
Glue Sticks
Box Re-Sizer
Impulse Sealer Use newspaper sealed in produce bags or store bought bags as dunnage.
Tape By the Case
Clear
Clear Tape II
Brown
Brown Tape II
Tape Guns
Box Cutter
Unlimited USPS Padded Envelopes (70lb)
Boxes From Grocery and other businesses
Banana Boxes for heavier items.
Splice together for larger boxes.
Premium Shipping
Paper Tape