Do you think we could add a section of the website for making unique equipment? Everything from enchanted gear, exotic weapons, even loot dropped by some of the monsters on this site could be recorded there.
Hand weapons would of course have their Name, Damage, Reach, Parry, Cost (which would also be the item's sale value), Weight and Notes (such as how many hands it requires) listed on the sheet, but also the skill needed to use the weapon (along with any defaults for related skills) as well as any special properties it may have (follow up effects on hit for example).
Ranged weapons would have their Name, Damage, Acc, rage, RoF, Shots, ST, Bulk, RcL, LC, Cost, Weight and Notes as well as a skill, but would also have a cost and weight for the ammunition they use, if any. As well as a special properties section.
Armor and wearable equipment would have a location it goes on, a Damage Resistance, a cost, a weight and maybe other details such as the SM of creature it was made to be worn by (a dwarven helm would be SM-1) and of course any other properties it might have (a magic armor might have an Aura effect for example)
Shields would have a Damage Resistance, a Defense bonus and a notes section similar to armor, with a section for notes (a buckler for example does not take up the use of the hand its strapped to)
Consumables could have their cost, weight, method of use (like drinking for a potion, throwing at the ground for a smoke bomb etc) effects, and any skill rolls needed to identify or use the item (Alchemy might be needed to determine what a potion you found does for example) as well as uses (a magical item may have few charges before it becomes inert etc).
Pricing would be easy enough, you could base the value of a magical item off the "Buying Magic Items" on page 20 of GURPS Magic, use the retail prices for new inventions in the basic set for higher tech stuff, gadgeteering price guides for really high tech items and for really complex items you could always treat 1 character point as $1000 GURPS dollars when building something thats an equipment based version of an advantage like affliction or innate attack.