• Use FV to sell Linux support. Lots of people want to give you money.
• Convert all the Linux man pages, info files, and documentation files to HTML. Add searching. Put it up on the web.
• Pick up development of wt, a freely copyable engine for doom-like worlds.
• Take my PostScript Form TX (used to register copyright on computer software), and add a WWW forms interface to it, so that people can easily generate a filled-out Form TX on their PostScript printer.
• Make an htmlgrind CGI script so that people can browse source code via the web. Never mind, someone has already done it.
• After you do that, combine it with my outlining CGI script (as yet, unpublished -- ask me for a copy) so that people can browse big source files a part at a time.
• Businesses cannot afford the cost of free software, because they need support, often on a 24x7 basis. So, use Linux to put together a business machine. Sell it all as one: hardware, software, and support. Scarf as much free software as you can off the net. It has to do payroll, taxes, invoicing, purchasing, email, faxes, voice mail, web serving, etc. Position it as a "business computer in a box".
• Make a LAN Manager server out of a Linux box running Samba. Sell it fully pre-configured, with support. Allow people a few options, like the amount of disk space, and whether they want CD-ROMs or not. Position it as a drop-in server for Windows for Workhouses.
• Sell a service for organizing the alt.* groups. Set up a mailing list of customers, and email them a checkgroups message. I'll be your first customer!
• See other people's suggestions (and add your own).
• More ideas as I think of them