Magic items for boosting SU and SLAs (Monstrous Races)

[Yogibear41]

Are there any good items to boost monster's innate SLA and SU abilities? Obviously cloaks of Charisma will boost the Saving throw DC of most such abilities, but I am looking for other items that might boost, improve, or add more uses to non-at will abilities.

[Darg]

Metamagic rods are arguably capable of being used on SLAs similar to the sudden metamagic feats as it operates on the same concept.

Warlock's scepter's bonus to attack rolls work on all ranged touch attacks.

[Thurbane]

Veil of Allure (MIC p. 145) increases the DC enchantment spells and SLAs, as well as Cha based Ex or Su abilities, by 2.

Dragon Spirit Cincture (MIC p.95) increases breath weapon damage by one die (and increases DC by 1 if you hold a weapon that deals the same type of elemental damage).

[Thurbane]

Metamagic rods are arguably capable of being used on SLAs similar to the sudden metamagic feats as it operates on the same concept.

I've seen this discussed before: it depends on a fairly generous extrapolation of the relevant rules, and is 100% "ask your DM" territory IMHO.

[Darg]

I've seen this discussed before: it depends on a fairly generous extrapolation of the relevant rules, and is 100% "ask your DM" territory IMHO.

I wouldn't even call it generous. It flat out tells you that's how and why it works. The only reason it is under question is because it doesn't directly state other metamagics work even though it says they could work. I'm not even sure 0 cost metamagics other than sudden metamagic existed when CArc was released.

[daremetoidareyo]

Terran brandy from bovd

[ShurikVch]

If Metamagic rods really work, then some of this items may work too:
Amulet of Fearsome Might (Dragon #332): +2 DC on spells and SLA with fear descriptor
Brilliant Jewel (Dragon #356): when activated, +2 CL for all spells and SLA in the area (30')
Dagger of the Fireheart (Dragon #350): +4 to the DC of the bearer's charm, fire, and necromancy spells; relic of Wee Jas's church
Demonomicon of Iggwilv (Dragon #336): +5 CL for evil spells; [minor artifact]
Hel's Death Staff (Dragon #345): +2 DC vs Giants
Mantle of the Winter Witch (Dragon #324): +1 damage per damage die of any spell with the cold descriptor
Might Stone (Dragon #356): For a number of times per day equal to the spell level invested, you may add: +2 DC for spell or power of the same school or discipline; +1d6 damage for Eldritch Blast or Breath Weapon; or +2 to overcome SR
Ring of Gnomekind (Dragon #333): +1 DC for illusion spells
Rings of the Spider (Dragon #318): +1 DC of any enchantment, evocation, or necromancy spells
Rod of Famine (Dragon #312): Quicken spells from Hunger domain 3/day
Sea Hag's Pearl (Dungeon #153): +1 CL; cursed item - slowly turns into a Sea Hag
Staff of Shadow Maiming (Dungeon #112): +2 CL for all necromancy spells; [minor artifact]
Tasha's Grinning Idol (Dragon #359): +2 DC of all enchantment spells
Visard of Semuanya (Dragon #335): +1 CL of all Summon Nature's Ally spells