How do you grab a photo from your device's storage?

Well, it didn't actually take all that long:

Drive Folder with Images

Google Apps Script Web App

function doGet(e) {
  var ss = SpreadsheetApp.getActive();
  var sheet = ss.getActiveSheet();
  sheet.clear();
  sheet.appendRow( ['Filename', 'FileType', 'FileID', 'ViewUrl'] );
  
  var folderId = '1EjhZxyuFy_edited_wkS--QdpauABaMpU';
  var folder = DriveApp.getFolderById(folderId);
  var contents = folder.getFiles();
  var file, name, id, url, type;
 
  while(contents.hasNext()) {
    file = contents.next();
    name = file.getName();
    id = file.getId();
    url = "https://lh3.googleusercontent.com/d/" +file.getId();
    type = niceFileType(file.getMimeType());
    sheet.appendRow( [name,type,id,url] );     
  }  
  SpreadsheetApp.flush();
  rng = sheet.getDataRange().getValues();
  return ContentService.createTextOutput(JSON.stringify(rng));
}

function niceFileType( mimeType ) {
  
  if (typeof this.fileType === 'undefined') {
    this.fileType = {};
    this.fileType[MimeType.FOLDER] = "Folder";
    this.fileType[MimeType.GOOGLE_APPS_SCRIPT] = "Google Apps Script";
    this.fileType[MimeType.GOOGLE_DOCS] = "Google Doc";
    this.fileType[MimeType.GOOGLE_DRAWINGS] = "Google Drawing";
    this.fileType[MimeType.GOOGLE_FORMS] = "Google Form";
    this.fileType[MimeType.GOOGLE_SHEETS] = "Google Sheet";
    this.fileType[MimeType.GOOGLE_SLIDES] = "Google Slides";
    this.fileType[MimeType.JPEG] = "JPG";
    this.fileType[MimeType.PNG] = "PNG";
    this.fileType[MimeType.BMP] = "BMP";
    this.fileType[MimeType.GIF] = "GIF";
    this.fileType[MimeType.SVG] = "SVG";
    this.fileType[MimeType.PDF] = "PDF";
    this.fileType[MimeType.CSV] = "CSV";
  }
  return (this.fileType.hasOwnProperty(mimeType)) ? this.fileType[mimeType] : "UNKNOWN";
}

Blocks (updated to call thumbnails)

Spreadsheet with Data

App Screenshot

note: the image folder is set to anyone with the link (as are the files inside). The spreadsheet can either be restricted or anyone with the link.

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