Minimalist desk drawer

A couple of minimalist desk drawer designs. The larger one with the separate rails uses 3mm screws with a 6mm head diameter. The second smaller design uses stitching screws like these (https://www.bunnings.com.au/macsim-8g-x-16mm-stitch-button-screws-jar-300-pack_p0164923), but any screws should work if they have a low profile head. No support needed.