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.
For single use
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
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.