Do you have anything controlling how hot that UTH gets? That's the biggest issue you need to be concerned about at this time.

Don't worry about the lightweight hide...let the snake move it around to wherever it seems most comfortable.

On your budget, I would suggest going to Lowes or similar hardware store and getting a dimmer switch for table lamps...it's like an extension cord that has a dimmer switch attached to it. Plug that into the UTH. It's not nearly as simple or consistent as a thermostat, but it'll do in a pinch until you can save up for a reliable t-stat.

Also, get yourself a digital indoor/outdoor thermometer. They often measure humidity as well. They can be found at the hardware store or at places like Walmart. Place the unit itself in the corner of the cooler side of the enclosure, and put the probe over the UTH so you can make sure it's not getting too hot. Then dial in the best setting with the dimmer switch. You may need to keep an eye on it as the ambient room temps fluctuate....but at least you'll know it won't get TOO hot.

Lastly, if you get some coconut husk bedding from the petstore, that will help maintain decent humidity levels in a glass tank. A bit messy to set up, but good stuff.

You should be able to get all of that with your $50.

Welcome to BP.net!