Hop in the car and drive to Casey's Diner (36 South Ave., Natick, 508-655-3761). This might be one of the coziest (read: small) places you'll ever eat in, but if you're looking for good grub at a low cost, it's hard to beat. Casey's is known for its hot dogs. If you don't do meat, go for the grilled cheese. $6.70 (for two hot dogs and two sodas). Add tip: $2.
Head to The Center for Arts in Natick (14 Summer St., Natick, 508-647-0097, www.natickarts.org) for its folk/acoustic open mike nights, held most Mondays at 8 p.m. Events include a mix of new and seasoned performers (Lori McKenna has played there), and end with a performance by a featured musician. $10 for two (free for center members).