Several

Feedback Suppressor, for Acoustic-Electro and Classical-Electro Guitars, Mounts Directly into Soundhole, Improves Volume on Stage, Quick and Easy to Install and Remove, Tapered Design Allows for Tighter Fit to a Variety of Guitars , does not require modification of the instrument, allows you to play your guitar at a higher volume, made with an inert material safe for the finish of your guitar, diameter: 10 cm.

Nib holder with capacity for 4 or 5 medium-calibre nibs, includes hook tab for easy attachment to any surface.

Compact and intelligent 4-footswitch Bluetooth MIDI controller, supports standard MIDI input and output, USB, MIDI, and Bluetooth MIDI input/output/thru, send and transfer MIDI messages to separate or combined MIDI outputs, send maximum 16 MIDI messages per pedal (32 for A/B groups), 100 banks (each bank includes 4 footswitch settings, 2 CTRL/EXP jack settings and more), different footswitch trigger actions for flexible switching and various uses, dedicated mobile app lets you allows you to easily set up your controller on the fly, 2 TRS CTRL/EXP jacks for adapting footswitches or expression pedals, 3-digit LED for MIDI message information and Bluetooth connection status display, DC 9-18V or 5V power supply USB, dimensions: 258.5 x 55.5 x 49 mm, weight: 440 g.