[CREATE] Beer can cups

[Ramiro]

I've been brainstorming for the last few hours about converting beer cans to cups, I know you can remove the cap out of the beer can yet in order to properly make such recipient a reliable cup It need to be stronger given that it lacks such property I was thinking of overlaying a layer of material from the inside of the can, such as for example clay with enamel (I already asked my aunt who's is into moldery and she told me that at the cooking temperature of clay was high enough to ruin the can) you have any ideas to how to achieve my goal