It's a bad idea for a bunch of reasons but you could always do it yourself: https://nanoporetech.com/products/sequence/minion
Even then, you'll need expertise in analysing the output reads. And EVEN then it's difficult to accurately assess variants.
Using DIY tools and not being a trained biostatistician or whoever usually looks at these things you are very likely to face errors you don't know how to account for. I would guess the odds are high you'll encounter scary false positives for example.
It sounds really fun though, something I've always wanted to do with more time.