[Of course It depends on your customers but if that's not just for some low-budget indy films then I'd consider working with a big manufacturer like LeCroy or Keysight who'd probably love to get its equipment (and brand name!) on screen and very likely would provide you with propups for free. Not just scopes but probes and some demo PCBs which generate some nice looking signals.
EDIT:
In principle it is a good idea, and in some cases, could be done. But .............
My guess would be that, it would be a BAD idea. Because my understanding is that on-screen branding, has complicated licensing requirements, and people making films and TV programs, don't want to get into that sort of mess/situation.
E.g. Some TV channels/countries ban on screen product brand placements. The UK certainly did, and still does in many cases. If there are such programs, they need to make it clear at the beginning of the program by showing in the UK, a (P) or similar symbol, for PRODUCT placement.
There are also many other contractual and licensing requirements, across all the different countries involved.
tl;dr
Best to avoid showing on-screen filmed BRANDED items, on purpose. It causes many problems. UNLESS that is how your TV/films are being funded.
But I am NOT an expert on this, and the OP probably knows best.