diff --git a/parts/designing-surveys/designing-surveys.zip b/parts/designing-surveys/designing-surveys.zip
deleted file mode 100644
index 597310f..0000000
Binary files a/parts/designing-surveys/designing-surveys.zip and /dev/null differ
diff --git a/parts/estimating-models/estimating-models.zip b/parts/estimating-models/estimating-models.zip
deleted file mode 100644
index 1497bb0..0000000
Binary files a/parts/estimating-models/estimating-models.zip and /dev/null differ
diff --git a/parts/fielding-surveys/fielding-surveys.zip b/parts/fielding-surveys/fielding-surveys.zip
deleted file mode 100644
index dcb1f07..0000000
Binary files a/parts/fielding-surveys/fielding-surveys.zip and /dev/null differ
diff --git a/parts/render.R b/parts/render.R
index 360abe7..df2b762 100644
--- a/parts/render.R
+++ b/parts/render.R
@@ -7,12 +7,3 @@ renderthis::to_pdf("index.html", paste0(lesson, ".pdf"))
 
 # Compress the PDF to reduce size
 tools::compactPDF(paste0(lesson, ".pdf"), gs_quality = 'ebook')
-
-# Create zip files of class notes
-zip::zip(
-    zipfile = paste0(lesson, ".zip"),
-    files = c(
-        # 'demoSurvey.Rmd',
-        'practice.R',
-        paste0(lesson, ".Rproj"))
-)
diff --git a/practice/2023-qux-conf-conjoint.Rproj b/practice/2023-qux-conf-conjoint.Rproj
new file mode 100644
index 0000000..a91d965
--- /dev/null
+++ b/practice/2023-qux-conf-conjoint.Rproj
@@ -0,0 +1,15 @@
+Version: 1.0
+
+RestoreWorkspace: Default
+SaveWorkspace: Default
+AlwaysSaveHistory: Default
+
+EnableCodeIndexing: Yes
+UseSpacesForTab: Yes
+NumSpacesForTab: 4
+Encoding: UTF-8
+
+RnwWeave: Sweave
+LaTeX: pdfLaTeX
+
+BuildType: Website
diff --git a/practice/2023-qux-conf-conjoint.zip b/practice/2023-qux-conf-conjoint.zip
new file mode 100644
index 0000000..d2ed3ab
Binary files /dev/null and b/practice/2023-qux-conf-conjoint.zip differ
diff --git a/parts/fielding-surveys/demoSurvey.Rmd b/practice/demoSurvey.Rmd
similarity index 100%
rename from parts/fielding-surveys/demoSurvey.Rmd
rename to practice/demoSurvey.Rmd
diff --git a/parts/designing-surveys/practice.R b/practice/designing-surveys.R
similarity index 100%
rename from parts/designing-surveys/practice.R
rename to practice/designing-surveys.R
diff --git a/parts/estimating-models/practice.R b/practice/estimating-models.R
similarity index 100%
rename from parts/estimating-models/practice.R
rename to practice/estimating-models.R