Laser cleaner
https://www.amazon.com/gp/product/B0002ZHG0K/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=shs02e-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B0002ZHG0K&linkId=4a0f5630c02e5a4dce9450ede2506f3c
Dvd cleaner - had this when my son loved to get ahold and scratch movies
https://www.amazon.com/gp/product/B01EEZGV7C/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=shs02e-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01EEZGV7C&linkId=b6efd13c0f8991146284838deb98838d