market yourself as a computer hardware/software repair guy at all of the nursing homes/retirement communities in the area. market it towards your target demographic, using font styles and language that they’d be familiar with in the 1960s - 1980s. be sure to show up clean shaven with a tie. be polite - yes mam/yes sir. charge through the nose.

I bet you could build up a significant dental fund within 6 to 8 months.