A while ago I created my own set of words that could be printed on card or magnet sheet for prayer activities.
Here they are as a PDF and an editable Word doc.
Download Magnetic_Words (MS Word)
You can print them on paper or card, or print onto magnetic paper, or onto adhesive paper and then stick onto magnet sheets.
BTW I'm a BIG fan of Magnetic Poetry and own lots of their sets. That's what is in the picture above.