diff --git a/src/common.ts b/src/common.ts
index efbc740..f803e8c 100644
--- a/src/common.ts
+++ b/src/common.ts
@@ -4,17 +4,62 @@ import resourceTimeGridPlugin from '@fullcalendar/resource-timegrid';
 
 import { unique_colors } from 'unique-colors';
 
-const calendars: { [key: string]: string } = {
-  computer_lab: '6mmjp85e4732ru6skf1dda54ls@group.calendar.google.com',
-  electronics: '1g8atbdschshrg2inf162rcqt4@group.calendar.google.com',
-  wood_shop: '4unv3ia1n9mc9u31n2n5lv8nd8@group.calendar.google.com',
-  fiber_arts_studio: '7gbndciog37ge0hd8ug33ml70k@group.calendar.google.com',
-  jewelry_studio: 'l0dl2jq3vhbi9f4lfmaf5negc0@group.calendar.google.com',
-  metal_shop: 'a4p97kiiafatqdr52c3a0cpre0@group.calendar.google.com',
-  room_reservations: 'f4ro53uklj2u6pr0se7ucskm6g@group.calendar.google.com',
+interface Shop {
+  calendar?: string;
+  children?: string[];
+}
+
+const shops: { [key: string]: Shop } = {
+  Cafe: {}, // same calendar as mezzanine
+  'Classroom / Computer Lab': {
+    calendar: '6mmjp85e4732ru6skf1dda54ls@group.calendar.google.com',
+    children: ['Printer, Canon iPF8400S 44" 8-Color/Pigment'],
+  },
+  'Digital Fabrication and Electronics Lab': {
+    calendar: '1g8atbdschshrg2inf162rcqt4@group.calendar.google.com',
+    children: [
+      '3d printer, Lulzbot Taz 6',
+      '3d printer, Lulzbot Mini',
+      'Laser Cutter, GLS Hybrid',
+    ],
+  },
+  'Fiber Arts Studio': {
+    calendar: '7gbndciog37ge0hd8ug33ml70k@group.calendar.google.com',
+    children: ['Mid Arm, Brother DQLT15'],
+  },
+  'Jewelry Studio': {
+    calendar: 'l0dl2jq3vhbi9f4lfmaf5negc0@group.calendar.google.com',
+  },
+  'Metal Shop': {
+    calendar: 'a4p97kiiafatqdr52c3a0cpre0@group.calendar.google.com',
+    children: [
+      'Plasma Cutter, Hypertherm Powermax85',
+      'MIG Welder, Miller 210',
+    ],
+  },
+  Mezzanine: {
+    calendar: 'f4ro53uklj2u6pr0se7ucskm6g@group.calendar.google.com',
+  },
+  'Wood Shop': {
+    calendar: '4unv3ia1n9mc9u31n2n5lv8nd8@group.calendar.google.com',
+    children: [
+      'ShopBot, PRSstandard 96-48-8, w/2.2hp Spindle',
+      'Table Saw, SawStop 3HP 10"',
+      'Planer, Powermatic 20"',
+      'Jointer, Powermatic 8"',
+    ],
+  },
 };
 
-const colors: string[] = unique_colors(Object.keys(calendars).length);
+function extract_calendars(shops: { [key: string]: Shop }): string[] {
+  return Object.values(shops)
+    .map((shop) => shop.calendar)
+    .filter((calendar) => calendar !== undefined) as string[];
+}
+
+const calendars: string[] = extract_calendars(shops);
+
+const colors: string[] = unique_colors(calendars.length);
 
 export const common_calendarOptions: CalendarOptions = {
   schedulerLicenseKey: 'CC-Attribution-NonCommercial-NoDerivatives',
@@ -41,6 +86,18 @@ export const common_calendarOptions: CalendarOptions = {
     minute: '2-digit',
     hour12: false,
   },
+  resources: Object.entries(shops).map(([shop, tools]) => {
+    return {
+      id: shop,
+      title: shop,
+      children: tools.children?.map((tool) => {
+        return {
+          id: tool,
+          title: tool,
+        };
+      }),
+    };
+  }),
 };
 
 export function main(
@@ -49,7 +106,7 @@ export function main(
 ) {
   const calendarEl = document.getElementById('calendar');
   const calendar = new Calendar(calendarEl!, calendarOptions);
-  Object.values(calendars).forEach((id, idx) =>
+  calendars.forEach((id, idx) =>
     calendar.addEventSource({
       url: '/calendar/ical/' + id + '/public/basic.ics',
       format: 'ics',
@@ -64,7 +121,9 @@ export function main(
           eventData.title = `${member}`;
           eventData.resourceId = tool;
           if (allTools) {
-            calendar.addResource({ id: tool, title: tool }, false);
+            if (!calendar.getResourceById(tool)) {
+              calendar.addResource({ id: tool, title: tool }, false);
+            }
           }
         }
         return eventData;