What options do I have to get 5v on my current project? I'm very new to arduino and have started work on my first project, a simple little web server. I'm using a NodeMCU with an sd card module and screen. The issue is that in order to power my sd card module, I need to input 5V which the MCU doesn't provide. 

In order to work around this I'm simply using an arduino nano as a power supply to pass into the vin input on the mcu.

What options do I have to exclude the need for the nano? Is there a simple module I can buy that acts as a power supply for 5v?

Any help would be great, thanks!
SD cards require 3.3V. Usually, to connect them to an Arduino running at 5V you need to get a level converter. However in your case it sounds like you are making work for yourself:

3.3V &lt;--&gt; 5V &lt;--&gt; 3.3V



  in order to power my sd card module, I need to input 5V 


Which SD card module? Maybe you don't need a "module".