Best Buy offers the RCA Indoor FM and HDTV Antenna, model no. ANT111F, for $3.99. (Amazon has it on backorder for the same price with free shipping for Prime members.) Opt for in-store pickup to avoid the $2.99 shipping charge. That's tied with our mention from last week as the lowest price we've seen. (It's a current low by $3.) It features a no-scuff bottom pad and can be easily repurposed as step one of a decent robot costume.