Your gags are like mine were, except I was more keen on using TU. My suggestion to train sound would actually be the mints, because most of the toons have level 6 sound so if the group uses two level 6's and 5's, all the cogs in a battle (except the last one) will explode! You can train TU a lot in facs, mints, DAs, and especially boss battles. You can train drop with a friend or TF (Which tons of people would love to be on this site). My main toon has trap, but when he was 107 laff he had level 5 trap
Now he has level 7 organic trap, and he's 113 laff. All you really need to do is use it with higher level drop or with squirt. For some reason squirt makes drop work more often, but not all the time unfortunately :/
Hope this helps!
Edit: For lure just use it during invasions, or solo buildings or something. Squirt just slowly maxes itself as you randomly use it
