Courgetti Spaghetti can be made by either finely slicing courgettes with a vegetable grater and cutting into smaller strips or you can get a spiralizer which does the same thing. For example this Spiralizer.
Another alternative is cauliflower rice. If you have a processor you just take a head of cauliflower and wash it and then blitz it. Otherwise you can grate it which has the same effect just takes a bit longer.
You can cook it in several ways- either cover with some cling film and pierce a few holes and blast in the microwave for a couple of minutes. Or cook in boiling water for about 30 seconds. Or you can fry it (with some coconut oil works well) for a few minutes.
This produces are drier "rice".
The results are fairly similar to proper rice and it soaks up dishes well. I served this with a chicken curry and it was very filling.