Next a Bliptronic again at £1 at the moment.
Next a QY20 going cheap although it is faulty so it might suit a DIY’er.
Next a Phillips PMC100 Mini Synth.
A Line 6 MIDI Mobilizer, which seems to be becoming more useful as an increasing number of apps start to make use of it.
A Zoom PS-04.
And lastly a Zoom PS-02