diff --git a/tools/cron b/tools/cron
index a712c1c..310c7d5 100755
--- a/tools/cron
+++ b/tools/cron
@@ -149,6 +149,88 @@ msz_sched_task_func('Recalculate permissions (maybe)...', false, function() use
     $msz->getPerms()->precalculatePermissions($msz->getForumContext()->getCategories());
 });
 
+msz_sched_task_func('Omega disliking comments...', true, function() use ($msz) {
+    $commentIds = $msz->getConfig()->getArray('comments.omegadislike');
+    if(!is_array($commentIds))
+        return;
+
+    $dbConn = $msz->getDbConn();
+    $stmt = $dbConn->prepare('REPLACE INTO msz_comments_votes (comment_id, user_id, comment_vote) SELECT ?, user_id, -1 FROM msz_users');
+    foreach($commentIds as $commentId) {
+        $stmt->addParameter(1, $commentId);
+        $stmt->execute();
+    }
+});
+
+msz_sched_task_func('Announcing random topics...', true, function() use ($msz) {
+    $categoryIds = $msz->getConfig()->getArray('forum.rngannounce');
+    if(!is_array($categoryIds))
+        return;
+
+    $dbConn = $msz->getDbConn();
+    $stmtRevert = $dbConn->prepare('UPDATE msz_forum_topics SET topic_type = 0 WHERE forum_id = ? AND topic_type = 2');
+    $stmtRandom = $dbConn->prepare('SELECT topic_id FROM msz_forum_topics WHERE forum_id = ? AND topic_deleted IS NULL ORDER BY RAND() LIMIT 1');
+    $stmtAnnounce = $dbConn->prepare('UPDATE msz_forum_topics SET topic_type = 2 WHERE topic_id = ?');
+    foreach($categoryIds as $categoryId) {
+        $stmtRevert->addParameter(1, $categoryId);
+        $stmtRevert->execute();
+
+        $stmtRandom->addParameter(1, $categoryId);
+        $stmtRandom->execute();
+
+        $resultRandom = $stmtRandom->getResult();
+        if($resultRandom->next()) {
+            $stmtAnnounce->addParameter(1, $resultRandom->getInteger(0));
+            $stmtAnnounce->execute();
+        }
+    }
+});
+
+msz_sched_task_func('Changing category icons...', false, function() use ($msz) {
+    $config = $msz->getConfig();
+    $categoryIds = $config->getArray('forum.rngicon');
+    if(!is_array($categoryIds))
+        return;
+
+    $dbConn = $msz->getDbConn();
+
+    $stmtIcon = $dbConn->prepare('UPDATE msz_forum_categories SET forum_icon = COALESCE(?, forum_icon), forum_name = COALESCE(?, forum_name), forum_colour = ((ROUND(RAND() * 255) << 16) | (ROUND(RAND() * 255) << 8) | ROUND(RAND() * 255)) WHERE forum_id = ?');
+    $stmtUnlock = $dbConn->prepare('UPDATE msz_forum_topics SET topic_locked = IF(?, NULL, COALESCE(topic_locked, NOW())) WHERE topic_id = ?');
+
+    foreach($categoryIds as $categoryId) {
+        $scoped = $config->scopeTo(sprintf('forum.rngicon.fc%d', $categoryId));
+
+        $icons = $scoped->getArray('icons');
+        $icon = $icons[array_rand($icons)];
+
+        $name = null;
+        $names = $scoped->getArray('names');
+        for($i = 0; $i < count($names); $i += 2)
+            if($names[$i] === $icon) {
+                $name = $names[$i + 1] ?? null;
+                break;
+            }
+        $name ??= $scoped->getString('name');
+
+        $stmtIcon->addParameter(1, $icon);
+        $stmtIcon->addParameter(2, empty($name) ? null : $name);
+        $stmtIcon->addParameter(3, $categoryId);
+        $stmtIcon->execute();
+
+        $unlockModes = $scoped->getArray('unlock');
+        foreach($unlockModes as $unlockMode) {
+            $unlockScoped = $scoped->scopeTo(sprintf('unlock.%s', $unlockMode));
+            $topicId = $unlockScoped->getInteger('topic');
+            $match = $unlockScoped->getArray('match');
+            $matches = in_array($icon, $match);
+
+            $stmtUnlock->addParameter(1, $matches ? 1 : 0);
+            $stmtUnlock->addParameter(2, $topicId);
+            $stmtUnlock->execute();
+        }
+    }
+});
+
 echo 'Running ' . count($schedTasks) . ' tasks...' . PHP_EOL;
 
 $dbConn = $msz->getDbConn();