Finishing my JP

Hey guys, figured I'd ask a quick question. I bought my JP without any thrusters, so Im using airfresheners as the "cone" part, but what type of sphere should I use for the upper "ball" part?

I haven't had any good ideas yet...

I saw someone say they used a wood craft ball from Michael's or a similar store

Here's a few photos when I made my scratch build thrusters.

Yep, I used a wooden ball from a Micheals craft store. I took the WoF template sheet that has the full/complete thruster picture on it for size reference. The wooden ball that I used has a flat spot on it, which made it easier to attach the thruster cone.




I'm currently thinking about re-doing the indented/recessed detail on the thruster ball as I've now got some great reference pics. Still trying to figure out how I'll make it though.