Here is an eight digit Seven-segment display based on MX7219 that recently appeared on eBay. They mostly come from China/Hong Kong and cost from $4.00
A few years ago Hoverfly developed a servo based gimbal controller called the HoverflyGIMBAL that performed well and was adopted by many multirotor filmers.
I just got an e-mail from Altera, that I thought was very relevant to the P1V discussion
"Get the “FPGAs For Dummies”
Radio Shack has these touch screen displays on the rack for $15.
I grabbed one - just because it's too cool and looks like ought to