diff --git a/src/main.rs b/src/main.rs
index e0d9a52..e24df58 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -34,6 +34,9 @@ struct ConfigOutput {
     /// Used as the OpenGraph description in meta tags
     description: String,
 
+    /// Hide all these UIDs from the final output
+    hide_uids: BTreeSet<String>,
+
     /// Timezone to use for output (e.g. "Antarctica/South_Pole")
     ///
     /// <https://en.wikipedia.org/wiki/List_of_tz_database_time_zones>
@@ -401,12 +404,21 @@ fn read_data_from_disk(config: &Config) -> Result<Data> {
     Ok(data)
 }
 
-fn process_data(data: &Data, now: DateTime<chrono_tz::Tz>) -> Result<Vec<EventWithUrl<'_>>> {
+fn process_data<'a>(
+    data: &'a Data,
+    hide_uids: &'a BTreeSet<String>,
+    now: DateTime<chrono_tz::Tz>,
+) -> Result<Vec<EventWithUrl<'a>>> {
     let params = Parameters::new(now)?;
 
     let mut instances = vec![];
     for (ical, config) in &data.icals {
         for ei in ical.event_instances(&params)? {
+            if let Some(uid) = ei.ev.get_uid()
+                && hide_uids.contains(uid)
+            {
+                continue;
+            }
             let ei = EventWithUrl::from_ei(config, ei)?;
             instances.push(ei);
         }
@@ -505,8 +517,12 @@ fn output_html(
                 maud::html! { (ei.calendar.short_name)}
             };
 
+            // This is where the main stuff happens
+
+            tracing::debug!(uid = ei.ev.get_uid(), summary = ei.ev.get_summary());
             day_list.push(maud::html! {
-                li { p { (time) " - " (summary) }
+                li { details {
+                    summary { (time) " - " (summary) }
                     ul {
                         li { (calendar_link) " calendar" }
                         @if let Some(location) = location {
@@ -514,7 +530,7 @@ fn output_html(
                         }
                     }
                 }
-            });
+            } });
         }
     }
     // FIXME: De-dupe
@@ -623,7 +639,7 @@ async fn do_everything(cli: &CliAuto) -> Result<()> {
 
     let tz = &config.output.timezone;
     let now = Utc::now().with_timezone(tz);
-    let instances = process_data(&data, now)?;
+    let instances = process_data(&data, &config.output.hide_uids, now)?;
     output_html(&config.output, &instances, now)?;
     Ok(())
 }
@@ -655,7 +671,7 @@ fn main_ics_debug(cli: CliIcsDebug) -> Result<()> {
 
     let tz = &config.output.timezone;
     let now = Utc::now().with_timezone(tz);
-    let instances = process_data(&data, now)?;
+    let instances = process_data(&data, &config.output.hide_uids, now)?;
     output_html(&config.output, &instances, now)?;
 
     Ok(())