I tried to poke around, and I can't quite figure out how to NSIS, so I would like to ask the fine dev community at large to please attempt to portablize the Gridcoin wallet. There is a github issue regarding this: https://github.com/Erkan-Yilmaz/Gridcoin-tasks/issues/4
It is free and open source, and an MIT license.
According to a couple of members in our community, the wallet data can indeed be moved to portable folder and accessed without stuff installed on the OS drive, but my programming knowledge is limited by inexperience (I started coding in April). I am more than willing to help anybody test on this project, and I'm sure I could provide valuable insight on the inner-workings and common problems associated with inital setup, but packaging it all is a little beyond me for now.
Main site: https://gridcoin.us/