Use a ceramic hamster food bowl as a water bowl, kitchen towel as substrate and toilet roll tubes as hides. Apart from that you'd just need a decent thermometer and some pinkies.
You don't need an actual viv for a while. As it grows just upgrade to a suitably sized "really useful" box or something similar after a few months, then after a year or so it'll be ready to go in a proper viv.
I wouldn't bother spending money on fancy hides and bowls while it's little as it'll just out grow them really quick.