Flash Trax

Way back in 2004 I started with my first DSLR. I only had one memory card. I bought the 40G Flash Trax. I could go anywhere and take pictures and load them onto this device. Think of the possibilities. I also used the Flash Trax as my portable stereo to take to my office (which I did for 5 years). Here is a link to the review of the 40G and the 80G Flash Trax. They are still sold today. Unfortunately only on eBay
https://m.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m4084.l1313.TR3.TRC0.A0.H0.Xflashtra.TRS0&_nkw=flashtrax

I hope this device might make your journey easier
https://m.dpreview.com/articles/4675536715/smartdiskflashtrax