Total Recommendations: 1
If you liked
Honzuki no Gekokujou: Shisho ni Naru Tame ni wa Shudan wo Erandeiraremasen
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...then you might like
Tondemo Skill de Isekai Hourou Meshi
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similar plot. Both Main character gets reincarnated/isenkai with the knowledge of modern product in a magic filled world. basically use knowledge to create common modern item etc that doesn't exist in the new world.