My Dd is having her first baby next month, so I have made her a fold up nappy changing mat.
I went to Sewing for Pleasure at the NEC in March and saw a stall selling kits.
https://sewing-sanctuary.com/product/sjp-b0004-nappy-changing-mat-inc-vat/ They sell a lot of different laminated fabric which is quite easy to sew using ordinary needles.
[ You are not allowed to view attachments ]
I used a different colourway for the inside and the pockets ( they are for a nappy and wipes).
I am fairly pleased with how it turned out, apart from my less than perfect binding.