Gday, and welcome to rollaclub.
A couple of handy hints for you so that you time here will be well spent.
Search and you shall seek. Many topics have been covered before. The rides and projects threads are a wealth of knowledge, and if it's not covered somewhere in there, then it probably can't be done.
Try putting more info into you post. We can make many different suggestions, but if you only have $300, not many of them will be practical. You have to keep in mind that we get asked very opened ended questions like yours about once a day at the moment, so if you don't have a think about the questions you ask, you're not going to get answers you're happy with.
Regards
Dwarf