Bonuses from similar stuff
 

If I have multiple items that would serve the same functional purpose (ex. Level Counter App (which gives various boons), Level Playing Field (which gives a bonus to one type of item) and a level counter(s) that matches one (or more) of the expansions in the game we're playing)(which, when used with a matching expansion, lets you start at level two) may I use them all, or are there some limitations to those.

Re: Bonuses from similar stuff
 

You may only use one level-counting device at a time.