The former low cost Visor Magnifier that I notified everyone about previously is now available from American Science & Surplus for the low cost of $7.95 each. I bought one for my grandson and then ordered another one for me as a back up to take to buildathons..... nothing lost if lost or given away.
See sciplus.com and go to Headband Magnifying Visor. There is also a 15% discount for signing up with them. What a deal!
I have no affiliation with this company, just a happy purchaser in the past.
