If you don't succeed in registering it, go to Aminet and download the MagicWB icon packs from there. Start with all the RabbitIcons and RomIcons packs, they should have replacement icons for pretty much all your programs.
Also download the "IconPack" archive to get iconizer, a tool which lets you copy icons while retaining the destination icon's tooltypes etc.
The lockpens functionality of MagicWB should be available in different forms in different utilities on Aminet. Try FastIPrefs, for example.
The copper-pattern background program is basically WBVerlauf, also available from Aminet.
Good luck!