Good to see you enjoying your income mate! Shoes is a good choice too, if you don't take care of your feet they won't be able to get ya to where you need to be!
Me, I've got two pair. Both about two years old. A pair of lowtop sneakers that I got a great price on and a pair of ankle high steel toe from Walmart.
Splurge a little more and get some work boots/shoes. Always good to have a pair.