Double XP Weekend.

Those are just giving EXAMPLES. They didn't list every monster you can fight to give xp, they didn't list every spell you can cast to give xp. THINK

 

Herblore, or stats that worth MUCH coins to train.

 

best skill to do over xp weekend is herblore. I have 60-95 banked with around 100m, would normally cost 180+

 

You do know the exp rate goes down every 45 minutes right?

 

I bought 200mil worth of herblore supplies for this lol. Even though the rate goes down, 1.1x is still better then nothing for herblore.
i think an interesting thing to do for double exp weekend would be, plant your stuff, log off, come back when you know its grown, harvest, replant, log off, and continue, you would only be logged in for a few minutes each time you get exp.

 

The price increase from people hoarding herbs and secondaries negates any money you'd save by the increased experience earned doing herblore during the weekend.

Gf your cash. If you do get below ~1.5x and are still doing herblore, you're spending more money than you would normally be.