  The growth of quantum technologies is attracting the interest of many
students eager to learn concepts such as quantum entanglement or quantum
superposition. However, the non-intuitive nature of these concepts poses a
challenge to understanding them. Here, we present an entangled photon system
which can perform a Bell test, i.e. the CHSH inequality, and can obtain the
complete tomography of the two-photon state. The proposed setup is versatile,
cost-effective and allows for multiple classroom operating modes. We present
two variants, both facilitating the measurement of Bell inequalities and
quantum state tomography. Experimental results showcase successful manipulation
of the quantum state of the photons, achieving high-fidelity entangled states
and significant violations of Bell's inequalities. Our setup's simplicity and
affordability enhances accessibility for less specialized laboratories,
allowing students to familiarize themselves with quantum physics concepts.
