Four micro CT datasets acquired at the Technical University of Denmark in January 2023. Each dataset consists of zip-file containing both projection and vendor reconstruction data along with geometric metadata. The datasets were acquired by teachers and students of the DTU course Scientific Computing for Computed Tomography (SC4CT) in January 2023, https://people.compute.dtu.dk/pcha/HDtomo/SCforCT.html Rubrics cube: Nikon micro-CT dataset of a Rubik's cube, showing the internal plastic and metal mechanisms. Frosen mouse: Nikon micro-CT dataset of a frozen mouse. The sample slipped during the scan so contain a few movement artifacts which may be removed if using only short-scan data. Match: Zeiss micro-CT dataset of a match head showing the constituents of the head. Wizard: Zeiss micro-CT dataset of a Lego Gandalf mini figure with cape and staff. Reconstruction from the raw projection data can for example be done using the Core Imaging Library (CIL), https://ccpi.ac.uk/cil/, reading in the data using either the CIL ZeissDataReader or NikonDataReader.