I have been using a generic short microUSB OTG https://www.amazon.com/Cable-Matters-Micro-USB-Adapter-6-Inch/dp/B00GM0OZ4O/ref=sr_1_4?ie=UTF8&qid=1475292897&sr=8-4&keywords=usb+otg with this short right angled USB A to USB B cable https://www.amazon.com/gp/product/B00B5HS7TI/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1. However, the angles is all messed up. It difficult to calculate the angle from pictures. So I have been using the first OTG cable with a long printer USB A to B cable. I bought a Samsung J3 prepaid phone $100 new. It has Android 6.0.1 with excellent screen. OTG works perfect with USB Audio Player Pro. Put in a 128GB card, you are set. Way better deal than an Ipod Touch, but the cable management is a little chaotic right now. Thanks for the input though.
Thats about the best you'll do in terms of cable management. The hard adapter is maybe just one step cleaner, but at the expense of additional stress on the phone's USB port.