Add this program to your path; Sign up for these sites; When you find a few spare minutes just run it.

productive.py

#!/usr/bin/env python

import random
import webbrowser
import argparse

urls = {
    "keybr": "http://keybr.com/",
    "pocket": "https://getpocket.com/random",
    "worldindata": "https://ourworldindata.org/",
    "memoryleague": "https://memoryleague.com/#!/train",
    "readwise": "https://readwise.io/dailyreview",
}


def main(args):

    if args.selection == "all":
        webbrowser.open(random.choice([u for u in urls.values()]))
    else:
        webbrowser.open(urls[args.selection])
    

def setup():
    parser = argparse.ArgumentParser(description="📝 Have a few spare minutes? Get productive!")
    parser.add_argument("-s", "--selection",
                        choices=["keybr", "pocket", "readwise", "all"], default="all",
                        help="Select a specific thing you want to work on.")

    args = parser.parse_args()
    return args

if __name__ == '__main__':
    args = setup()
    main(args)