Well, Dynamic memory it is. Only for the layout configuration at least

src/windowPool.cpp

@@ -0,0 +1,98 @@
+#include "windowPool.h"
+#include "UIComponent.h"
+#include "UIBar.h"
+#include "UIString.h"
+#include "UITable.h"
+#include "values.h"
+
+namespace WindowPool {
+  WindowEntry pool[MAX_WINDOWS];
+  bool inUse[MAX_WINDOWS] = {false};
+
+  static inline int16_t getNextIndex() {
+    for (int k = 0; k < MAX_WINDOWS; k++) {
+      if (!inUse[k]) {
+        return k;
+      }
+    }
+
+    return -1;
+  }
+
+  int16_t Allocate(ComponentType t) {
+    int16_t nextIndex = getNextIndex();
+    if (nextIndex < 0) {
+      Serial2.println("Failed to allocate comp: poolIndex exceeds MAX_WINDOWS");
+      Serial2.print(  nextIndex);
+      Serial2.print(  " >= ");
+      Serial2.println(  MAX_WINDOWS);
+      return -1;
+    }
+
+    pool[nextIndex].type = t;
+
+    switch(pool[nextIndex].type) {
+      case BAR:
+        pool[nextIndex].bar = new UIBar();
+        break;
+      case STRING:
+        pool[nextIndex].str = new UIString();
+        break;
+      case TABLE:
+        pool[nextIndex].table = new UITable();
+        break;
+      case BASE:
+        pool[nextIndex].base = new UIElement();
+        break;
+    }
+
+    // Mark it as in use
+    inUse[nextIndex] = true;
+
+    return nextIndex;
+  }
+
+  void Deallocate(int16_t id) {
+    switch(pool[id].type) {
+      case BAR:
+        break;
+      case STRING:
+        break;
+      case TABLE:
+        break;
+      case BASE:
+        break;
+    }
+
+    inUse[id] = false;
+  }
+
+  UIElement* GetHandle(int16_t id) {
+    switch(pool[id].type) {
+      case BAR:
+        return pool[id].bar;
+        break;
+      case STRING:
+        return pool[id].str;
+        break;
+      case TABLE:
+        return pool[id].table;
+        break;
+      case BASE:
+        return pool[id].base;
+        break;
+    }
+
+    return nullptr;
+  }
+
+  void PrintInUse() {
+    for (int k = 0; k < MAX_WINDOWS; k++) {
+      if (inUse[k]) {
+        Serial2.print(k);
+        Serial2.print(" : ");
+        Serial2.println(inUse[k]);
+      }
+    }
+  }
+}