I have toyed with the idea of making ice cream since ever. I had a Barbie Ice cream shop, which turned into an ice cream maker (neve got round to using it as such). I tried making my family eat frozen, crystallized soya milk with whatever. Not nice. But I've found a recipe for vegan, homemade, CREAMY ice cream that does not require machinery!
The original recipe is from Natalie Rose, but as usual I just modified it :)

3 bananas
3 tablespoons of pure cocoa powder
2 tablespoons of tahini
1 tray of smallish ice cubes
a nice squirt of agave syrup (to taste)

Blend together in a food processor (add the ice slowly).
It's really, really nice (and healthy!). And it's been approved by Mr. M (not vegan).