Small USB meter that does graphing, maybe the ZY1275, which is supposed to have all or most of the features of the ZY1276, and it’s in a small form factor like a flash drive (similar likely to the RD USB 3.0 meter in size or just a bit wider). Actually haven’t seen a review of the ZY1275 nor reviews of it. It seems to not be that popular??
Or the Power-Z KM001 is also small in size, and has graphing capabilities.
Dodge did a quick review of the KM001 here:
I think the KM001’s protocol identification isn’t as good as the ZY1276’s.
KM-001 also has the QC2/3/FCP/etc protocol trigger (but not spoofing - doesn’t convert if the power adapter doesn’t have that protocol in the first place)
The KT001 (Avhzy CT-002) and others may also have similar features, but are a bigger form factor like the UM-series or the ZY1276 in size.