Usually on smogon, if there isn't a more useful alternative, the item recommended on most pokemon is leftovers. In fact I'd wager that every team in the current metagame has at least one poke with leftovers. But what if you don't care about leftovers? For example if you have a reliable recovery option and don't want to waste an item. Or if you are trying to bluff a choice item and don't want to have the recovery ruin that scheme.
The two obvious ones are Lum Berry or, for offensive pokemon, life orb, if they're not bluffing a choice item, or expert belt if they are. Not to mention berries such as Petaya, Salac, Leichi, Yache, Wacan, Babiri and Occa berries (to name a few). But I tried using Bright Powder on a Defensive Zapdos with U-Turn to some relatively effective results. Given that the move most likely to be used against Zapdos (in my experience) is Stone Edge, with Bright Powder that off putting accuracy is made even wore and can be extremely beneficial. Not to mention Ice Beam missing is quite enjoyable. It doesn't make a pokemon rely on chance but it does give it an easier time in doing its job.
Obviously this isn't the only unusual item and I'd like to know what other unusual items others have been used to success and how viable non-conventional items are.
The two obvious ones are Lum Berry or, for offensive pokemon, life orb, if they're not bluffing a choice item, or expert belt if they are. Not to mention berries such as Petaya, Salac, Leichi, Yache, Wacan, Babiri and Occa berries (to name a few). But I tried using Bright Powder on a Defensive Zapdos with U-Turn to some relatively effective results. Given that the move most likely to be used against Zapdos (in my experience) is Stone Edge, with Bright Powder that off putting accuracy is made even wore and can be extremely beneficial. Not to mention Ice Beam missing is quite enjoyable. It doesn't make a pokemon rely on chance but it does give it an easier time in doing its job.
Obviously this isn't the only unusual item and I'd like to know what other unusual items others have been used to success and how viable non-conventional items are.