lynx, wget, and curl to access malicious tools stored on their home computers or something

If this is the case you might find a firewall to be helpful.

Not sure how to do this using other firewalls exept perhaps ipf, but in ipfw (FreeBSD) you could try something like:

ipfw add allow all from any to any established
ipfw add allow all from any to any via lo0
ipfw add allow tcp from any to me 80
ipfw add drop  log all from me  to any
[download]

while wget might have legit uses, i'm not sure why anyone would be needing to use lynx or curl. Chances are chroot, or a jail would be in your best interests as well.