Ok, here is my smith bod process - note that tailor is different:
1 - Sort all bods into : Plate Colored, Chain Colored, Ring Colored, Non-combine colored, Iron EX, Iron Normal
2 - For all non-combine - throw out any that are copper normal, shadow normal, dc normal. Its not worth the ingots and the rewards are junk. Chuck em. Toss em at the forge and someone else will pick them up.
3 - For iron bods - take out any Iron EX 20's that use alot of ingots - heater shields, armor, axes etc. Toss or sell them.
4 - Fill the rest of the iron EX bods and use to turn in to get more bods.
5 - Fill and turn in all the normal bods by buying the items from the smith. Yes, you can buy 10 metal shields from the NPC smith and use to fill the bod. Gold is easy to get - ingots not as easy. Save your iron ingots for EX bods and fill normals buy buying them. When you you buy from an NPC, about 10-15 min later they will 2x as many. Do the 20 bods first since that is an even number - then later you can fill say 2 15's and 10 out of 40 daggers etc.
6 - For the armor bods - I toss the ones that aren't good individually and give junk rewards combined. For example - copper 20 normal plate bods alone would give prospector tool. Copper 20 normal plate large gives +10 hammer. No way is that worth like 2,000 copper ingots to fill a 20 normal large. Toss em!
7 - Fill all non-combine EX DC bods and Shadow 10-15. They all can give powder. The 20 DC EX and Shadow 10-15 give a high chance - and the 10-15 DC EX give smaller chance but still worth the ingots. Same goes true for Gold normal and Aggy 10-15 normal.
8 - Depending on the large rewards - also fill DC EX, Shadow 10-15 EX and Gold Normal and Aggy NM 10-15 armor bods. The exceptions is cases where the large gives a better reward - Example Chain Dull 10/15 EX is only 3 smalls and gives bronze hammer. I'd rather have bronze hammer (350k value) vs a 20% chance at 3 vials of powder.
Keep cycling the iron bods to get more colored and armor bods.
Hope that helps! thats just one Bod addicts method.
Now if you excuse me, I have 20k+ bods calling my name