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diff --git a/unit07_tunnelling/.DS_Store b/unit07_tunnelling/.DS_Store
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diff --git a/unit07_tunnelling/lab/~$w_lab07.docx b/unit07_tunnelling/lab/~$w_lab07.docx
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diff --git a/unit08_blockchain/lab/src/ether01.sol b/unit08_blockchain/lab/src/ether01.sol
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@@ -0,0 +1 @@
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diff --git a/unit08_blockchain/lab/src/ether02.sol b/unit08_blockchain/lab/src/ether02.sol
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diff --git a/unit08_blockchain/lab/do_not_use_windows_version.docx b/unit08_blockchain/lab/windows/do_not_use_windows_version.docx
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rename from unit08_blockchain/lab/do_not_use_windows_version.docx
rename to unit08_blockchain/lab/windows/do_not_use_windows_version.docx
diff --git a/unit08_blockchain/lab/do_not_use_windows_version.pdf b/unit08_blockchain/lab/windows/do_not_use_windows_version.pdf
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rename from unit08_blockchain/lab/do_not_use_windows_version.pdf
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diff --git a/unit07_tunnelling/lecture/~$unit07_tunnelling.pptx b/unit10_services/lecture/~$unit09_host_services.pptx
similarity index 100%
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rename to unit10_services/lecture/~$unit09_host_services.pptx