Been there, done that : mixed results.
I blew $20 at Home Depot for 3/8" sticky foam with shiny aluminum covering, and a roll of aluminum insulation tape.

1. looks like s**t.
2. hard to keep clean.
3. it does work to a certain extent, but ONLY in delaying the time it takes the IAT to reach the point it would have without the wrap, also it then tends to keep the IAT higher longer during cooldown.
4. Conclusion : not worth the effort.

I have also thought about wrapping the CAI in 1/4 or 3/8 aluminum tubing and using a small pump like the REST pump along with a small water to air radiator. Wrap this in thin aluminum reflective insulation and it "might" keep the CAI at near ambient.
I have been advised by reliable members that this project would also be a waste of time ........