I'm bored so things that are relatively minor have more space available to be annoying.
My toll tag isn't working so, instead of going zooming through the auto pay lane on the motorway, I had to queue up with the riff-raff and pay. Plus I only had a €2 coin so I over paid by 10c.
Also DH was loading up cool bags from the fridge to bring away with us. One of them was mine, brand new, never used, bought to replace my old one with the broken zip. When we got to our destination he hadn't noticed that a tub of strawberries had gone mouldy so there was off-strawberry juice all over the inside of the bag. It washed away, obviously, but still it's taken the newness off it. 
What minor and unimportant things have bothered you recently?