Depends on location. It would be best to have one for each cell carrier’s network at your location +1 that is WiFi only. Therefore you can easily check where service is possible, and which one you’re going to run the battery down on. Always use different logins on each device so you can exploit multiple app-based freebies.

Note that any email can be used for a Google account, for instance my username is the same @gmail, @outlook, and @yahoo and all three can be used to log into android. Prepaidcompare if you’re in the US will give you the cheapest way to each network and typically Samsung, Apple, and Google (with Graphene) are the three phone brands to have.

Removed by mod

The lack of Zebra and Pentel, over representation of Uniball and felt tip, as well as no Fisher narrows the capabilities of the options. The Uniballs are going to smear for a lefty, the felt are going to have the tip degrade and be inconsistent across paper types, the fat pens are more difficult to position the start/stop on the ruler or lettering guide, so the Bic Cristal or the Pilot G2 are the best choices, but I have no experience with Sharpie Gel.