diff --git a/.gitmodules b/.gitmodules
index 80840e9..90cc58d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,12 @@
 [submodule "docker-service-architecture-skill"]
 	path = docker-service-architecture-skill
 	url = https://git.prettyhefty.com/Bill/docker-service-architecture-skill.git
+[submodule "obsidian-vault-manager"]
+	path = obsidian-vault-manager
+	url = https://git.prettyhefty.com/Bill/obsidian-vault-manager.git
+[submodule "capital-project-electrical-analysis"]
+	path = capital-project-electrical-analysis
+	url = https://git.prettyhefty.com/Bill/capital-project-electrical-analysis.git
+[submodule "grist-accounting"]
+	path = grist-accounting
+	url = https://git.prettyhefty.com/Bill/grist-accounting.git
diff --git a/README.md b/README.md
index 3740dda..f233c7f 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,10 @@ git submodule update --remote --merge
 
 | Skill | Description |
 |-------|-------------|
+| [capital-project-electrical-analysis](https://git.prettyhefty.com/Bill/capital-project-electrical-analysis) | Capital project electrical analysis |
 | [claude-skill-git-gitea](https://git.prettyhefty.com/Bill/claude-skill-git-gitea) | Git and Gitea repository management |
 | [construction-database-skill](https://git.prettyhefty.com/Bill/construction-database-skill) | Construction project databases in Grist |
 | [docker-compose-config-skill](https://git.prettyhefty.com/Bill/docker-compose-config-skill) | Docker Compose configuration |
-| [docker-service-architecture-skill](https://git.prettyhefty.com/Bill/docker-service-architecture-skill) | Docker service architecture |
\ No newline at end of file
+| [docker-service-architecture-skill](https://git.prettyhefty.com/Bill/docker-service-architecture-skill) | Docker service architecture |
+| [grist-accounting](https://git.prettyhefty.com/Bill/grist-accounting) | Double-entry accounting in Grist |
+| [obsidian-vault-manager](https://git.prettyhefty.com/Bill/obsidian-vault-manager) | Obsidian vault management |
\ No newline at end of file
diff --git a/capital-project-electrical-analysis b/capital-project-electrical-analysis
new file mode 160000
index 0000000..408fa97
--- /dev/null
+++ b/capital-project-electrical-analysis
@@ -0,0 +1 @@
+Subproject commit 408fa9764b09a32719962849fd83f8a43e3003f0
diff --git a/grist-accounting b/grist-accounting
new file mode 160000
index 0000000..a83f436
--- /dev/null
+++ b/grist-accounting
@@ -0,0 +1 @@
+Subproject commit a83f436a083c23f7e1936eb38334daddf777e060
diff --git a/obsidian-vault-manager b/obsidian-vault-manager
new file mode 160000
index 0000000..cc75737
--- /dev/null
+++ b/obsidian-vault-manager
@@ -0,0 +1 @@
+Subproject commit cc75737d90d5f898a2889cacd56d8ec93380bb36