Los laseres molan mucho
https://www.instructables.com/id/Arduino-Laser-Show-With-Real-Galvos/
https://www.youtube.com/watch?v=QLwdwvleztA
https://es.aliexpress.com/item/32552395825.html?spm=a2g0o.detail.1000013.3.61b36533bzU7Dt&gps-id=pcDetailBottomMoreThisSeller&scm=1007.14977.165002.0&scm_id=1007.14977.165002.0&scm-url=1007.14977.165002.0&pvid=6bf488f4-b86b-44d5-b3e8-c0f8baa6b39f&_t=gps-id:pcDetailBottomMoreThisSeller,scm-url:1007.14977.165002.0,pvid:6bf488f4-b86b-44d5-b3e8-c0f8baa6b39f,tpp_buckets:668%230%23170098%233_668%23808%235965%23486_668%23888%233325%231_668%232846%238113%23678_668%232717%237558%23154
https://es.aliexpress.com/item/33022265912.html?spm=a2g0o.productlist.0.0.33d046a6O0GRQO&algo_pvid=7ce8195f-1238-402f-b3bd-779f47da821a&algo_expid=7ce8195f-1238-402f-b3bd-779f47da821a-0&btsid=0ab6fb8815890121317423085e8bf3&ws_ab_test=searchweb00,searchweb201602,searchweb201603_
https://hackaday.com/2010/09/15/laser-marquee-projector/