There are several useful mods for Idle Game Maker, which you can find on the forum. You can find the main thread for them here.
Installation (Chrome) Edit
For single use Edit
Step 1 - Open up Wall Destroyer in a new tab if it is not already open.
Step 4 - Copy and paste the desired mod into the console input bar and press enter.
To install bookmarklets for repeated usage Edit
Step 1 - Right click on the bookmarks bar and click 'New bookmark'.
Step 2 - Paste the bookmarklet code into the Location bar and save it.
Step 3 - Click on the bookmark while you are on a Wall Destroyer tab to apply the mod.