I've made a lot of things from kids toys to puzzles and quite a few mechanical prototypes. I've made a few nozzles for garden hoses and other nick nacks too.

I started out mostly printing models from thingiverse then I designed a few things with Tinkercad and modified a few models from thingiverse with tinkercad. I found Tinkercad was very easy to use but it is quite limited as far as CAD software goes, so I stated an account with Onshape which is a fully fledged CAD system that is browser based and cross platform.