You should definitely check out TI-calculator gaming and programming if you don't know it already. There are dozens and dozens of great games and applications for these devices, especially for the TI-84 Plus (the classic monochrome one, not the later rebrandings TI-84 Plus CSE and CE) and TI-89 Titanium, ticalc.org's archives are choke-full of great stuff: https://www.ticalc.org/archives/files/.
I'm sure I'll have great fun with the Series 3 - I look forward to dive in this new ocean of possibilities. Thank you again for your help.