A few online stores are now selling a 3/8" thread mount Mini Ball Head with Quick Release plate styled after the discontinued Manfrotto 484RC2. The 484RC2 is replaced by the 494RC2 which goes for around $60+ dollars.

This 484RC2 inspired Mini Ball Head mounts to a larger 3/8" thread, but you could easily step it down to fit 1/4" threads with these little adapters (click here). So, If you're in need of just a random mini ball head for your projects with a quick release plate, here's another cheaper option.

Mini Ball Head 484RC2 Style Quick Release 3/8" Thread