Hey, I've collected the throwable ID's for server cleanup purposes (hope I got them right) and I thought I'd post them here for easy access.

Base.Throwable-Rock
Base.Throwable-Sparkler
Base.Throwable-Brick
Base.Throwable-Bottle1
Base.Throwable-Bottle2
Base.Throwable-Bottle3
Base.Throwable-PopCan
Base.Throwable-BeerCan
Base.Throwable-Basketball
Base.Throwable-Football
Base.Throwable-GolfBall
Base.Throwable-PoolBall
Base.Throwable-SoccerBall
Base.Throwable-TennisBall
Base.Throwable-Dart
Base.Throwable-TinCan
Base.Throwable-Mugl
Base.Throwable-MugRed
Base.Throwable-MugWhite
Base.Throwable-MugSpiffo
Base.Throwable-Teacup
Base.Throwable-GlassTumbler
Base.Throwable-GlassWine
Base.Throwable-Plate
Base.Throwable-PlateBlue
Base.Throwable-PlateOrange
Base.Throwable-PlateFancy
Base.Throwable-WaterBottleEmpty
Base.Throwable-PopBottleEmpty
Base.Throwable-BleachEmpty


One-liner to add to your comma-separated WorldItemRemovalList sandbox var:

Base.Throwable-Rock,Base.Throwable-Sparkler,Base.Throwable-Brick,Base.Throwable-Bottle1,Base.Throwable-Bottle2,Base.Throwable-Bottle3,Base.Throwable-PopCan,Base.Throwable-BeerCan,Base.Throwable-Basketball,Base.Throwable-Football,Base.Throwable-GolfBall,Base.Throwable-PoolBall,Base.Throwable-SoccerBall,Base.Throwable-TennisBall,Base.Throwable-Dart,Base.Throwable-TinCan,Base.Throwable-Mugl,Base.Throwable-MugRed,Base.Throwable-MugWhite,Base.Throwable-MugSpiffo,Base.Throwable-Teacup,Base.Throwable-GlassTumbler,Base.Throwable-GlassWine,Base.Throwable-Plate,Base.Throwable-PlateBlue,Base.Throwable-PlateOrange,Base.Throwable-PlateFancy,Base.Throwable-WaterBottleEmpty,Base.Throwable-PopBottleEmpty,Base.Throwable-BleachEmpty