Weapons for Halflings and other small sized creatures

The Known World holds a bit of a distinction among the major D&D campaign settings; it's the only one with a detailed, developed Halfling homeland central to the campaign world. Sure, Forgotten Realms has a Halfling nation, but it's way off the beaten path in a corner of Faerun pretty much ignored by the setting material. Other worlds, like Greyhawk, just throw Halflings in as an afterthought, giving little or no thought to where they came from.

Taking that into consideration, it makes sense that the Hin, and their nation, militias and "military" (limited as it is) would craft weapons of their own, rather than just borrow from their human neighbors. With that in mind, I put together the following chart, modified from the D&D Basic Set:

Weapon	DMG	Hands	Cost	Notes
Hand Axe	1d4	1	3 gp
Battle Axe	1d6	2	5gp
Hin Crossbow	1d4	2	20gp	May be used 1 handed by larger creatures, Known as a "hand crossbow" to humans and dwarves. Ammo cost is 6gp for 30 quarrels.
Short Bow	1d6	2	25gp
Hin Bow	1d4	2	18gp	Too small for use by larger creatures. Ammo cost is 3gp for 20 arrows.
Hin Dagger	1d2	1	2gp	Silvered version costs 20gp
Hin Greatblade	1d8	2	15gp	Basically the same thing as a human normal sword
Hin Sword	1d6	1 Hand	10gp	Basically the same thing as a human Short Sword
Hin Smallblade	1d4	1	5gp	Basically the same thing as a human Dagger.
Hin Mace	1d4	1	3gp	Usable by Clerics
Light Club	1d2	1	1gp	Usable by Clerics
Hin Halberd	1d8	2	4gp
Sling	1d4	1	2gp	Same as human version. Ammo cost is 1gp for 30 stones, or they may be foraged (DM discretion on availability) at the rate of 1d20 per hour.
Short Spear	1d4	1	2gp	Also known, among humans, as a javelin
Hin Battlehammer	1d4	1	3gp	Usable by Cleric
Hin Smallspear	1d2	1	1gp	Too small to be used as a missile weapon by larger creatures, may be used by those folk as an improvised stabbing weapon though. Human original is found in the Expert Set.
Shortstaff	1d4	2	1gp	The Shortstaff is about 3.5 to 4 feet long. Human original is found in the Expert Set.
Hin Hilt-and-a-half Sword (aka Hin Bastard Sword)	1d4+1 (one Handed) 1d6+1 (two Handed)	1 or 2	8gp	Human original is found in the Companion Set.
Hin Fork (Hin Trident, among mariners)	1d4	2	2gp	Human original is found in the Companion Set.

The Hin versions of the Bola, Blackjack, Net and Whip, from the Companion set are effectively the same weapons as their Human counterparts.

There are no Hin versions of the Blowgun or Heavy Crossbow, from the Companion set. In addition, the Hin are a little less deviously innovative with weapon variants than their Human neighbors, and the only common Pole Arm type found in the Shires is the Hin Halbard, listed above.

Likewise, the Hin are not common practitioners of artillery or siege warfare, and these machines are not usually found within the Shires. Where Catapults and Ballistas are found, they are identical to their Human equivalents, except that when the crew is made up only of Hin, one extra crewman is required per machine.

The basic rule, derived from the D&D 3rd edition Arms & Equipment Guide supplement, is, take the normal, human version (aka "medium sized weapon"), decrease the range by 1/2, rounded up, and drop the damage down to the next lower die type (so 1d6 damage becomes 1d4, etc). Price is roughly 1/2 of the human version, rounded up. This should suffice for a quick conversion of any nonstandard weapons you've added to the lists in the rulebooks.