Let me know what you guys think!
I think these are great ideas, although the Tripwire Bombs and the Explosive Paste could probably be combined into the one item, as attaching a trigger plate to the Explosive Paste is essentially a Tripwire bomb. In addition, I think being able to instantly cover 5 squares with the Tripwire bomb is a little over-powered. You're on the right track though.
As for the Bolas, I think a knockback isn't necessary and 10 seconds is a bit too long, but again, it's a great idea and would work great with a little game-balancing.