Beta particles are simply electrons. Photons are packages of light. Therefore, any device that uses high energy electrons and emits light would be emitters of beta particles and photons.
Specifically, a cathode ray tube emits both beta particle and photons. A tritium fluorescent light is a specific example of a beta particle emitter.
Most electronic are emitters of beta particles and photons. Electronics use electricity. The wires that stem from electronics are made of metals. The wires are made of metals because metals are good conductors of electricity. This means that the wires all the electrons to travel through them. Although the electrons that travel through most electronics are at much lower energies than beta particles, the electrons and beta particles are the same fundamental particle.
Since photons are packages of light, photon emitters are even more common than beta particle emitters. Essentially anything that emits light would be a photon emitter.
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