Thank you all for your suggestions.
A boy is only 8 once and I want it to count since Matt is limiting me to gifting only one (can't blame him, don't want to spoil him). Some of my most beloved guns and gun memories at my age (36) come from my uncles. I want to turn the favor in spades.
KriegHund, since you asked, my brother's procedure is that the boy remove the bolt from his weapon whenever they go forward of the firing line (a picnic table) or go in for the night. He must give the bolt to my brother and then they go forward to check on the massive damage to the enemy coffee and paint cans.
I understand the shotgun recommendation. However, I believe as Jeff Cooper recommends that shotguns come last. I.e., it is easier/cleaner to teach trigger control with a rifle than with a shotgun. Shotgun may come at 12 or 13 after rifle proficiency.
Bearcat looks intriguing, however, I have major political issues with Ruger and that stab wound to my back that Bill Ruger inflicted on us has not healed yet, at least for me. Ruger does make very fine weapons I do admit and the Bearcat would make a great deal of sense.
I believe that a repeating .22 is the way to go. Had not considered that CZ Scout. I will now.
Only a few gun shows between March and June. I have plenty of time to make up my mind (i.e., weekend before his party).