You don't have to stick to blueberries - basically any fruit that will fit in those little squares will work. Try raspberries or blackcurrants. Even fresh herbs would work a treat. They won't last forever - you should use them within about a month.
I've also learnt that ice is bloody hard to take a photo of. There will be no more of that this week.
- An ice cube tray
- Blueberries - depending on how many ice cubes your tray requires
Do you really need me to tell you how to do this? One tip, because those blueberries can be floaty little buggers - push them down with your finger and make sure they're totally submerged in the water. Otherwise they explode a bit when they're frozen and don't look nearly as pretty.