It's not really the done thing to just whip out a Game Boy at your desk at work or to talk about how well your Charmander is doing during a morning meeting. I'm not sure your boss would take too lightly if you downloaded Delta on your workphone to get in some Pokémon ROM hack time while out in the field either. For some reason, organisations just don't want us to be 'wasting' time playing when we should be doing work.
I've come across a Game Boy Emulator written in VBA and Excel that allows you to open up your favorite Game Boy games inside a spreadsheet in a bid to combat that problem. Created by KatrinaJames, who presumably just wanted to travel around Kanto instead of filling in cells, the project allows you to upload a Game Boy game into the data inputting program, swapping Sums and Formulas for Tetris and Kirby.

Now I know what you're thinking - 'that probably doesn't work very well, right?' You've seen Super Mario 64 running in a PDF, so you're already feeling sceptical.
Well, you would be right. Listed in the issues section on the project's GitHub page, the first item is 'Performance is extremely poor (to the point of being unplayable)'. I mean, it's not exactly what you want to hear, and neither is the fact that saving doesn't work or any music.
Ok, the music is a little bit of a giveaway if you're playing covertly, but not having any save features... that's a bit of an issue. Still, the fact that you can Launch Pokémon Red and get it actually running is great, and while the project has lain dormant for a while, it might spark someone to continue where Katrina has left off and get this running perfectly. I wan't to play Dragonyhm in a spreadsheet instead of calculating how much Brandon owes me when I've paid for company lunches!