Flying Wonder can take no Actions?

"I think some (many?) DMs would let you flavor a Bat familiar as a Flying Mechanical Wonder (since it has an established Stat Block and some similar features and is a CR-0 creature). This would let you share senses with the Flying Wonder as a Bonus Action."

Familiars ftom the Find Familiar spell for wizards can never attack. For warlocks, they can 

Familiars require a wizards bonus action to tell them to do something, often Help. Warlocks can swap on of their attacks to let the familiar attack.

An artificer homunculus servant has a force weapon that works in melee and to a 30ft range, and can fire without any action from the artificer.

Flying Wonders are magic items/constructs, so they dont have the restrictions that a familiar would (no attack)

So not sure a dm would quite so easily allow a player to reflavor one for the other. They are quite different and as a dm i might get confused about what the player is doing.

Quote from Tarod_ >>

Shouldn't it just be 100 pounds max instead of the normal rules?

Increased Carrying Capacity. The wonder can carry up to 100 pounds.

Yes. I misread it. That makes it even less useful for having it carry you (unless you are small and even then, you may have to be barely equipped).

I originally read it as increasing the carrying capacity. If it's carry only, does that mean that it can carry 100 pounds and Lift/Drag/Push 30 pounds?

Quote from SunIsGettingRealLow96589 >>

So not sure a dm would quite so easily allow a player to reflavor one for the other. They are quite different and as a dm i might get confused about what the player is doing. 

"Flavoring" would mean it is in all mechanical senses a bat familiar, but I will describe it as a flying wonder. What it sounds like you are describing is taking a flying wonder as a familiar which is completely different.