Don't be a stranger, instead buy a flanger. As used by lone ranger Hermione Granger who was born in a manger. 

Model: Behringer UF100 Ultra Flanger
Made: China, recent model (N0511385353)
Type: flanger
Power: standard 9v negative supply or battery (not included)
Switching: buffered bypass
Equivalent new street price (approx): $55aud
Mods: none
Accessories: no box or manual
Condition notes: used, no major marks, fully functional. Overall: very good condition