You can print the model as a unit or split to parts of you want to add laser/sound. I made this to house small laser modules and the DFPlayer https://www.dfrobot.com/product-1121.html to provide sound. The laser modules used here are green and red, amazon https://www.amazon.com/dp/B0BD5824QH?ref=ppx_yo2ov_dt_b_product_details - the green laser also purchased from amazon - please be careful, both lasers can cause damage to eyes, the green, possibly permanent damage - use eye protection!