Hello sterretje,
None of my local stores have one for the Mega. This project is my uni assignment, and it is due next week. Found one on Ebay, but I can't wait a week for shipping.
So @david_prentice , so I still proceed with your request?
I found one for the Uno though at my local store.
I also have the 2.8" TFT LCD display:
https://www.jaycar.com.au/medias/sys_master/images/images/9594875478046/XC4630-dataSheetMain.pdf
Here's the 2.8" LCD connected to the Uno.
As I am writing, I thought to myself that I need more pins, if I use this setup.

I can unplug D10-D13 as I don't need the SD card feature.
I'll just use the Mega board with the 2.8" screen as it has more pins.
