>>6848721Get him one of the switchstrike beyblades from the new season. Garuda G3 is the strongest competitive-wise (hard to burst), Valtrek V3 is the main character's beyblade.
If you want to go all out you can get this:
https://www.amazon.com/Beyblade-Burst-Evolution-Storm-Battle/dp/B071WWLSCZ/Great set with a stadium, two new beyblades and two launchers
Hasbro's string launcher is good
https://www.amazon.com/Beyblade-Burst-Evolution-Threat-Launcher/dp/B071WWLSD9 but if your little brother is a little careless with his toys a supergrip or a sword launcher would be the best option.