Reddit mentions of Retroflag NESPi Case+ Plus Functional Power Button with Safe Shutdown & Cooling Fan & Heatsinks & Flannel Bag for RetroPie Raspberry Pi 3/2 Model B & Raspberry Pi 3B+ (NESPI Case+)

1. if I remember correctly the SNES version doesn't shut down the fan when turned off. I like this case better
   
   https://www.amazon.com/Retroflag-Functional-Shutdown-Heatsinks-Raspberry/dp/B07872ZDCS/ref=sr_1_1
   
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2. I recommend 64 GB or more for MicroSD card, and don't cheap out ether, you need a good one for read and write speed.
   
   https://www.amazon.com/gp/product/B06XX29S9Q/ref=crt_ewc_img_dp_2?
   
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3. If you get a controller with analog sticks you can play most PS1 and N64 games
   
   https://www.amazon.com/Logitech-940-000110-Gamepad-F310/dp/B003VAHYQY/ref=sr_1_2

Ill point out a few things if anyone's interested:

|Laptop|Lenovo Yoga|
|:-|:-|
|Screens|24" Acer and old 21" Samsung Syncmaster|
|USB-C Dock|Plugable|
|Keyboard|Vortexgear Pok3r 2|
|Mouse|Logitech G305|
|Speakers|Logitech MX Sound|
|Headphones|AUDSOM (you can barely see them in this pic on the bottom right)|
|Deskmat|Homecas|
|Desk|Ikea (whatever the cheapest one is)|
|Small screen|Google Home Hub|
|Phone Charger|Sinjimoru|
|Raspberry Pi Case|RetroFlag|

I've only used the Logitech F310 with it. I think it's a good controller in general. Was super easy to set up with RetroPie the first time I turned everything on, and has worked well with the few nes, snes, and genesis games I've used it on so far. I also found that when I plugged a second one in I didn't have to do any extra configuring. It immediately had the same button mapping as the first controller, which was nice. I don't know for sure if the same thing would happen for other standard usb controllers though.

I'm kind of interested in buying a couple of the Buffalo SNES-style usb gamepads too, to give it that extra retro feel. They seem pretty nice.

Here's that Amazon link for the case/fan combo.

Let me know if you have any more questions! :)

Yeah, I think that building your own is the way to go. It's not really that hard to do if you can follow instructions and can write an image to a micro sd. I recently put one together and you can get away with spending around $100 for a great setup. This was my parts list:

SNES wired controllers x 2 ($16.00 ea):
https://www.amazon.com/gp/product/B002B9XB0E/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

The case ($27.99) : https://www.amazon.com/gp/product/B07872ZDCS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Memory card 32 GB ($11.99): https://www.amazon.com/gp/product/B010Q57T02/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

Raspberry Pi 3 Model B ($34.81): https://www.amazon.com/Raspberry-Pi-RASPBERRYPI3-MODB-1GB-Model-Motherboard/dp/B01CD5VC92/ref=sr_1_3?s=pc&ie=UTF8&qid=1521482606&sr=1-3&keywords=raspberry+pi+3

And then these optional luxury controllers - Wireless controllers x 2 ($47.16 ea): https://www.amazon.com/gp/product/B071SM6TDN/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

Tengo la NES Classic. Está chida porque es lo suficientemente similar a la NES que sí te da ese sentimiento de nostalgia cuando la desempacas y juegas con ella. Una cosa que no me gustó el filtro de TV. Está algo chafilla, hace que los juegos se vean muy borrosos.

Otra opción es comprar una Raspberry Pi e instalarle RetroPie, con un case mamalón y ya le metes todos los juegos que quieras. Pero sí es más latilla el configurarlo por primera vez.