Not all commodities are at new all time highs.
Palladium for example is about 60% below its 2001 highs. This volatile metal was trading anywhere between ~1100$ and less then 100$ over the last 30 years.
There are several ways to invest, trade and speculate in palladium:
1) Physical palladium: Palladium ETF (LSE: PHPD) and palladium maple coins.
2) Palladium derivatives: Futures (Nymex: PA)
3) Palladium mining stocks: SWC, PAL.