Possibly, but most of the time it won't cause an additional effect
Even if you inferred or house ruled that the rules for touching willing creatures for the purposes of spell targeting also applied to touching inanimate objects, none of them would be affected unless the spell already allowed multiple target objects.
The key limitation is the spell targeting clauses, not the number of objects you can touch in a round. The "up to six friends" limit only applies to spells that specifically affect more than one touched target. Obscure object, teleport object, and similar spells that specifically say one touched object, and thus don't qualify. The spell effect will discharge when you first touch an object, and everything after the first will not be affected even if you can touch it in the same round. If you wanted to affect a second object with a single target spell, you'd need to cast another spell.